Miscarriage FAQ: 30 Questions About
Causes, Fertility and Pregnancy After Loss

Recurrent pregnancy loss (RPL) generally refers to having two or more pregnancy losses, although definitions and which pregnancies are counted vary between professional guidelines.

Historically some definitions required three consecutive miscarriages. Today, several guidelines allow evaluation to be considered after two losses depending on circumstances. This matters because a couple should not necessarily be told “you've only miscarried twice, come back after the third”. At the same time, two losses do not automatically mean there is an underlying disease miscarriage is common, and two losses can occur by chance.

The purpose of recognising RPL is not to create another frightening diagnosis. It is to identify when the pregnancy history justifies a more structured evaluation.

Do the losses need to be consecutive? Not necessarily a history of miscarriage, then a healthy pregnancy, then another miscarriage can still be clinically relevant. Do chemical pregnancies count? That depends on the definition being used; some guidelines count clinically documented pregnancies, but repeated positive tests followed by very early losses should still be communicated to your clinician.

Is recurrent miscarriage the same as infertility? No. A couple with RPL may conceive relatively easily their challenge is pregnancy continuation rather than achieving fertilization or implantation. Some couples experience both, but they are not the same condition.

Key takeaway: Recurrent pregnancy loss generally means repeated losses, with evaluation often considered after two. It is different from infertility, though the two can coexist.

Related: When repeated losses justify structured evaluation →

Recurrent miscarriage can have several possible causes, and in many couples no single explanation is found even after appropriate evaluation. This is one of the hardest realities of recurrent pregnancy loss.

Areas commonly considered include:

• Chromosomal factors embryo abnormalities are an important cause; most happen sporadically, but in a smaller proportion of couples one parent carries a balanced structural rearrangement that does not affect their own health
• Uterine factors certain congenital or acquired structural differences, depending on type and location
• Antiphospholipid syndrome (APS) an autoimmune condition with a well-established association with pregnancy complications, important because diagnosis can change management
• Endocrine and medical factors particularly when inadequately managed
• Maternal age as age increases, so does the probability of chromosomal abnormalities in eggs and embryos
• Male factors including sperm DNA fragmentation, though the clinical role of specific tests depends on circumstances

Sometimes no cause is found. This is called unexplained recurrent pregnancy loss. “Unexplained” does not mean “there is definitely a hidden cause your doctor failed to find” it means current evidence-based evaluation has not identified an explanation.

This is exactly where couples become vulnerable to claims about hidden inflammation, immune rejection, toxins, food sensitivities, a “bad uterus” or unexplained hormone imbalance. Some of these areas are subjects of ongoing research, but an abnormal result on an unconventional test does not prove it caused the miscarriages.

Key takeaway: Recurrent miscarriage can involve chromosomal, uterine, autoimmune, medical and other factors, but many couples receive no single definitive explanation.

Related: Uterine and structural factors in repeated loss →

Evaluation is individualised, but it commonly focuses on pregnancy history, uterine anatomy, antiphospholipid syndrome, selected genetic factors and relevant medical or endocrine conditions. The goal is not to order every available test it is to identify findings supported by evidence that could meaningfully change management.

• Detailed pregnancy and medical history number of losses, gestational age at each, ultrasound findings, whether fetal cardiac activity was detected, previous healthy pregnancies, treatments, conditions, medications, family history
• Uterine assessment to identify structural abnormalities; the imaging method depends on the situation
• Antiphospholipid syndrome testing an established, potentially treatable cause; diagnosis requires appropriate laboratory criteria and clinical interpretation, and a single abnormal antibody result should not be self-diagnosed
• Genetic evaluation parental chromosome testing in selected couples; testing pregnancy tissue may also help in certain circumstances
• Thyroid and other medical assessment guided by history and evidence rather than dozens of automatic hormone tests
• Male evaluation reproductive history and health, with semen analysis where appropriate

What about immune testing? Be cautious with large panels involving natural killer cells, cytokines, extensive immune markers or broad thrombophilia panels. Some have been promoted as explanations for recurrent miscarriage despite limited evidence that routinely testing and treating them improves live-birth outcomes. That does not mean immune biology is irrelevant it means a biologically interesting test is not automatically a clinically useful test.

Before paying for any investigation, ask: if this result is abnormal, will it change management using a treatment supported by good evidence? That question prevents a great deal of unnecessary testing.

Key takeaway: Evaluation should be targeted toward clinically meaningful causes rather than ordering every available fertility, immune or clotting test.

Related: Choosing tests that can actually change management →

Yes. A significant proportion of couples with recurrent pregnancy loss do not receive a specific explanation after standard evaluation. This is called unexplained recurrent pregnancy loss, and it can be deeply frustrating.

After several losses, couples understandably expect testing to reveal “this is the problem fix this and the next pregnancy will work”. Medicine cannot always provide that answer, for several reasons.

Our tests cannot measure everything. Reproduction involves egg development, sperm development, fertilization, embryo genetics, early cell division, implantation, placental development and maternal physiology. Current clinical testing cannot observe or predict every failure point.

Some embryo abnormalities occur randomly. Even healthy couples can create an embryo with a chromosomal abnormality. If it happens more than once, that does not necessarily mean a permanent underlying disorder.

When standard tests are normal, couples understandably keep searching and may be told “your NK cells are high”, “your immune system is rejecting embryos”, “your body is too inflamed”, “your uterus is toxic”. A test result can sound scientific without proving it caused the miscarriages, and treatments carry cost, side effects and risk. The absence of an identified cause does not mean nothing can be done: preconception health can be optimised, known conditions managed, and future pregnancies appropriately monitored.

Key takeaway: “Unexplained” means no cause has been identified with current evidence-based evaluation not that future pregnancy cannot succeed.

Related: What to do when the results come back normal →

Many couples with recurrent pregnancy loss will eventually have a successful pregnancy, but individual probability depends strongly on maternal age, the number and timing of previous losses, any underlying cause and overall reproductive history.

After several miscarriages it is understandable to think “my body cannot carry a pregnancy”. But previous loss does not automatically mean every future pregnancy will end the same way and even among couples whose loss remains unexplained, successful future pregnancies are common.

Still, one success percentage for everyone would mislead. Consider two women who have each had three miscarriages: one is 27 with no identified condition, normal uterine evaluation and no major fertility factor; the other is 42 with three first-trimester losses. Same history on paper very different reproductive probabilities.

Other factors matter too: whether a cause was identified, the gestational timing of previous losses, previous live births, fertility history, medical conditions, male reproductive factors and whether assisted reproduction is being used.

The goal after recurrent miscarriage should not be to promise “we will prevent the next miscarriage” no ethical fertility program can guarantee that. A better goal is: identify clinically meaningful factors, address what can be addressed, optimise preconception health, and develop an appropriate plan for the next pregnancy.

Key takeaway: Many couples have successful pregnancies after recurrent miscarriage, including when no cause is found. Prognosis depends especially on age and reproductive history.

Related: Stories from couples who conceived after loss →

For most people, a single uncomplicated miscarriage does not reduce the ability to conceive or carry a future pregnancy. This is one of the biggest fears after loss and usually the answer is reassuring.

A miscarriage means a pregnancy began but did not continue developing. It does not automatically mean there is a problem with your ability to conceive again, and many people go on to have healthy pregnancies after one loss.

When could fertility potentially be affected? In uncommon situations, complications such as significant infection, uterine injury, certain complications following uterine procedures, or intrauterine adhesions may affect future reproductive health. But these are not the expected outcome of miscarriage management.

What about recurrent miscarriage? Repeated loss is different from fertility being “damaged”. A couple may conceive relatively easily but have difficulty maintaining pregnancies that deserves evaluation, but it is not the same as being unable to conceive.

Does miscarriage reduce ovarian reserve? A miscarriage itself does not normally reduce ovarian reserve. If AMH is low after a loss, we should not conclude “the miscarriage reduced your egg reserve” age and other ovarian factors need to be considered separately.

Key takeaway: A single uncomplicated miscarriage usually does not reduce future fertility, and one loss does not determine the outcome of the next pregnancy.

If you are struggling to conceive again some time after a previous pregnancy or loss, our Secondary Infertility FAQ covers what commonly changes in that time.

Related: Why one loss does not change your ovarian reserve →

Ovulation can return before the first menstrual period after a miscarriage, sometimes within a few weeks. This means pregnancy can occur before your next period arrives.

After a pregnancy ends, pregnancy hormones gradually decline. As the reproductive hormonal cycle resumes, the ovaries can begin developing another follicle and ovulation may occur. Your first period does not have to happen before your first ovulation ovulation happens before menstruation.

There is no universal date for its return. It can depend on how far the pregnancy had progressed, how quickly hCG declines, whether the miscarriage was spontaneous, medically or surgically managed, whether complications occurred, and your usual menstrual pattern.

Can I use an ovulation test immediately? Be cautious. Ovulation predictor kits detect LH, but residual pregnancy hormones can complicate tracking, and pregnancy tests may remain positive while hCG declines. Follow your healthcare professional's guidance rather than relying on an app or test strip alone.

And if your cycles were already irregular because of PMOS or another condition, ovulation after miscarriage may also be unpredictable a miscarriage does not reset the cycle into a regular pattern.

Key takeaway: Ovulation can return before the first period after miscarriage, so pregnancy is possible before menstruation resumes. Timing varies between individuals.

Related: Confirming whether ovulation has returned →

For many people, menstruation returns within roughly four to six weeks after a miscarriage, although timing varies.

The body does not immediately return to a non-pregnant hormonal state. hCG needs to decline, and the hypothalamic-pituitary-ovarian system then resumes normal cycling. Once ovulation occurs, menstruation generally follows if pregnancy has not occurred which is why the timing of the first period depends partly on when ovulation resumes.

Will the first period be normal? Not necessarily. It may be heavier, lighter, longer, shorter or more uncomfortable than usual, and the next few cycles may take time to return to their previous pattern.

What if my period does not return? If it has not returned within the timeframe your clinician expects, or you have ongoing positive pregnancy tests, persistent bleeding, pain, fever or other concerning symptoms, medical review is appropriate. Possible explanations include pregnancy occurring again, persistent hCG, retained pregnancy tissue, underlying irregular ovulation or other factors. Do not assume every delayed period is “hormonal imbalance” the clinical situation matters.

And if your cycles were irregular before pregnancy because of PMOS, thyroid dysfunction or another reason, they may not suddenly become regular afterward.

Key takeaway: Periods often return within about four to six weeks, but timing varies and the first cycle may differ from your usual pattern.

Related: Understanding cycle changes after pregnancy loss →

After an uncomplicated early miscarriage, many couples do not need to wait several months before trying again purely for medical reasons. The right timing depends on physical recovery, emotional readiness and the circumstances of the loss.

You may have heard “wait three months” or “you need three periods first”. That is not a universal rule after an uncomplicated early loss for many couples there is no evidence-based requirement to delay conception for several cycles simply because a miscarriage occurred.

Physical recovery matters. Before resuming intercourse or trying, consider whether bleeding has resolved, whether there are signs of infection, whether management is complete, whether hCG follow-up is required, and whether your clinician has given specific instructions.

Emotional readiness matters too. Some couples want to try again as soon as possible; others need weeks or months before pregnancy feels manageable. Neither response is wrong, and there is no emotional deadline.

Certain situations do require waiting after ectopic or molar pregnancy, significant infection or complications, certain medications or treatments, later pregnancy loss, or specific medical conditions. And after recurrent loss it may be useful to complete evaluation first, particularly if results could change management balanced against reproductive age and time.

Key takeaway: Many couples can try again relatively soon after an uncomplicated early miscarriage once recovery is complete and they feel ready. There is no universal three-month rule.

Related: Deciding the right timing for your situation →

A miscarriage does not create a special fertility boost, nor does one uncomplicated loss usually make someone less fertile. Fertility afterward largely depends on the same factors that affected fertility before the pregnancy.

You may have heard “you're super fertile after a miscarriage”. This is often repeated because some people conceive again quickly. But if someone conceived recently, that already tells us conception was possible and if ovulation returns quickly and intercourse resumes, another pregnancy may follow. That does not mean the miscarriage made them more fertile.

Can it become harder? For most people after one uncomplicated early loss, fertility is not expected to decline because of it. But the underlying situation still matters. A 28-year-old who conceived after two months and then miscarried has a very different outlook from a 40-year-old who tried for two years before conceiving. The miscarriage is only one part of the reproductive history.

This is especially important after a loss following a long period of infertility. The fact that pregnancy occurred is encouraging, but it does not mean the original fertility problem has disappeared.

Protect reproductive time. Couples are sometimes told to spend three or six months detoxing, improving egg quality, balancing hormones or preparing the uterus before trying again. Preconception health can certainly be optimised but delaying attempts should have a reason, particularly when age or another factor makes reproductive time important.

Key takeaway: Miscarriage does not create a period of increased fertility, and one uncomplicated loss usually does not reduce it. What follows depends on your underlying reproductive factors.

Related: Understanding your fertility picture after loss →

Some miscarriage risk factors can be identified and modified, but no diet, supplement, medication or lifestyle plan can guarantee that another miscarriage will not happen. Preparation should not become a promise of prevention.

Many early miscarriages occur because of chromosomal abnormalities in the embryo, which often happen sporadically and cannot be reliably prevented by a particular food, supplement or routine. Still, preconception care matters:

• Manage existing medical conditions diabetes, thyroid disease, hypertension, PMOS and others; the goal is appropriate management, not perfect laboratory numbers
• Stop smoking for either partner; it is associated with adverse reproductive and pregnancy outcomes
• Review alcohol use avoiding alcohol in pregnancy is recommended, and preconception is a useful time for both partners to review heavy consumption
• Review medications and supplements some need adjustment before pregnancy, others should not be stopped; review prescriptions, over-the-counter products and herbal remedies with a professional
• Take appropriate folic acid recommended before conception and in early pregnancy; the dose can differ by individual circumstances
• Work toward sustainable overall health activity, nutrition, sleep and appropriate weight management where relevant

But avoid turning this into “if I become healthy enough, I won't miscarry”. A healthy woman can miscarry. A woman who did everything “right” can miscarry. A loss is not proof that preparation was inadequate.

After repeated losses, reducing future risk starts with appropriate evaluation. If a clinically meaningful factor such as antiphospholipid syndrome or a relevant uterine abnormality is identified, management may change which is very different from giving every woman the same “anti-miscarriage protocol”.

Key takeaway: You can optimise modifiable factors and manage identified conditions, but no protocol can guarantee prevention of another miscarriage.

Related: Building an evidence-based preconception plan →

Supporting overall preconception health can be worthwhile, but there is no validated test showing that an individual woman's egg quality has been “improved” through a diet or supplement protocol before trying again.

The most common advice online is “wait 90 days and improve your egg quality”. There is some biology behind why it sounds convincing follicles develop over an extended period, and reproductive health is influenced by nutrition, smoking, metabolic health and medical conditions. But that does not mean 90 days of supplements = chromosomally normal eggs.

Egg quality generally refers to an egg's ability to mature, fertilize and contribute to a viable embryo, and a particularly important component is chromosomal competence for which the strongest predictor is maternal age. There is no routine blood test that says “your egg quality is 65%”. AMH does not do this. FSH does not do this. Antral follicle count does not do this.

Preconception preparation can still include adequate nutrition, appropriate folic acid, correcting documented deficiencies, stopping smoking, managing medical conditions, regular activity, adequate sleep and reviewing medications and exposures. These support overall reproductive and pregnancy health but should not be marketed as a guaranteed egg-quality transformation.

Should everyone wait three months? No. For a younger couple, taking time for evaluation or lifestyle changes has relatively little reproductive cost. For someone in her late 30s or 40s, repeatedly delaying for unproven protocols can consume valuable time. Ask “is there a reason to wait?” not “have I completed my 90-day program?”

Key takeaway: Preconception health can be optimised, but no 90-day protocol can guarantee improved egg quality or prevent chromosomal abnormalities.

Related: What egg quality does and does not mean →

Yes male reproductive health should be considered as part of recurrent pregnancy loss evaluation, although the specific tests depend on the couple's history and circumstances.

Pregnancy loss is often approached as “what is wrong with the woman?” But an embryo receives approximately half of its nuclear genetic material from the sperm, so male reproductive health deserves attention too.

Start with history paternal age, previous fertility history, smoking, heavy alcohol use, anabolic steroid or testosterone use, significant medical conditions, medications, testicular history, varicocele and occupational exposures.

Semen analysis may be appropriate if the couple also has difficulty conceiving or there are other indications. It assesses concentration, total number, motility and morphology but cannot assess every aspect of sperm function.

What about sperm DNA fragmentation? Higher fragmentation has been associated with pregnancy loss in research, and for selected couples with recurrent loss it may be reasonable to discuss with a specialist. However, a high DFI does not prove sperm caused the miscarriages, and it should not become an automatic explanation every time female testing is normal. Testing methods and thresholds also differ.

Why evaluate the man if conception is happening? Because the ability to fertilize an egg is not proof of completely normal male reproductive health. A man can have normal erections, ejaculation and even routine semen parameters while other factors remain relevant.

Key takeaway: Male reproductive health should be considered in recurrent loss, with evaluation targeted to the couple's history rather than assuming miscarriage is a female problem.

Related: Evaluating the male partner after repeated loss →

Folic acid is the core evidence-based preconception recommendation. Additional supplements should depend on nutritional needs, diet, medical history and identified deficiencies not a universal “miscarriage supplement stack”.

After a loss, couples are often handed long lists: prenatal, CoQ10, vitamin D, vitamin E, omega-3, NAC, inositol, selenium, zinc, iron, B12 and sometimes multiple herbal products. The problem is that more supplements do not automatically create a healthier pregnancy.

• Folic acid before conception and in early pregnancy, it helps reduce the risk of neural tube defects; the appropriate dose depends on individual circumstances and some people need a higher dose
• Prenatal vitamins a practical way to cover certain requirements, but formulations vary and taking several products together can cause unnecessary duplication
• Vitamin D correct a deficiency if present; that does not mean every woman needs very high-dose vitamin D
• Iron should reflect individual requirements; adequate stores do not mean more iron prevents miscarriage
• B12 and other nutrients vegetarian or vegan diets, malabsorption or medications may increase the likelihood of deficiency

What about CoQ10? It is frequently marketed for egg quality and has been studied, but it should not be presented as “take CoQ10 after miscarriage to prevent the next loss”. Evidence does not support that promise. And “natural” herbal products are not automatically safe they can have pharmacological effects, variable quality, interactions and limited pregnancy-safety data.

Don't forget the male partner if a deficiency or health issue exists it can be addressed, but he does not automatically need ten antioxidants because the couple experienced a loss. The strategy should be: identify needs → correct deficiencies → cover pregnancy requirements → avoid unnecessary megadosing.

Key takeaway: Folic acid is foundational. Other supplements should be individualised according to diet, deficiencies and clinical need rather than taken as a miscarriage-prevention protocol.

Related: Identifying what you actually need →

Before trying again, focus on appropriate recovery, understanding whether further evaluation is needed, optimising relevant health factors and preparing both partners without waiting for an unrealistic state of “perfect fertility”.

A miscarriage changes the question. Before the first pregnancy it was “how do we get pregnant?” Afterward it becomes “how do we make sure it doesn't happen again?” Nobody can guarantee that but you can approach the next pregnancy more systematically:

• Make sure recovery is complete bleeding, pain, hCG follow-up where required, ultrasound where indicated
• Review what happened gestational age at loss, ultrasound findings, laboratory results, pathology or genetic testing, any complications
• Decide whether further evaluation is appropriate after recurrent loss, discuss evidence-based assessment of uterine anatomy, APS, selected genetic factors, endocrine conditions and male reproductive health
• Optimise known medical conditions using clinically appropriate targets, not arbitrary “fertility perfect” numbers from social media
• Review nutrition and supplementation a sustainable diet and appropriate folic acid; you do not need a miscarriage detox
• Review both partners' lifestyle pregnancy preparation should not become a 25-item checklist for the woman while the man's health is unchanged
• Understand ovulation it may return before the first period, and if cycles are irregular, identify whether it is occurring
• Consider reproductive time the right strategy for a 26-year-old after one loss differs substantially from a 39-year-old after several
• Prepare a plan for the next positive test when to make contact, whether early monitoring is needed, which medications are indicated, when an ultrasound is appropriate, and which symptoms need urgent assessment

Finally, accept what cannot be controlled. Preparation can improve health, evaluation can identify some causes, treatment can address certain conditions but none of these guarantees the outcome of every pregnancy. The goal is not “do everything perfectly so miscarriage cannot happen”. It is “understand what we can reasonably change, receive appropriate care, and give the next pregnancy the best evidence-based preparation we can”.

Key takeaway: Recover appropriately, determine whether evaluation is needed, manage relevant factors, prepare both partners and protect reproductive time.

Related: Building your plan for the next pregnancy →

The most common symptoms are vaginal bleeding and cramping abdominal or lower back pain, but symptoms vary considerably and some miscarriages produce almost no symptoms at all.

Reported symptoms can include:

• vaginal bleeding, ranging from light spotting to heavy bleeding with clots
• cramping or pain in the abdomen, pelvis or lower back
• passage of tissue or fluid from the vagina
• a sudden reduction in pregnancy symptoms such as breast tenderness or nausea

Two important qualifications. First, bleeding in early pregnancy is common and does not always mean miscarriage many pregnancies continue normally after bleeding. Second, a missed miscarriage may produce no symptoms whatsoever and only be found at a routine scan, which is one reason it can feel so disorienting.

A reduction in pregnancy symptoms is also unreliable on its own, since nausea and breast tenderness fluctuate naturally.

Seek urgent medical care for heavy bleeding, severe or one-sided abdominal or pelvic pain, shoulder-tip pain, fainting or dizziness, fever, or feeling acutely unwell. These can indicate ectopic pregnancy or infection, both of which need immediate assessment.

Key takeaway: Bleeding and cramping are the most common symptoms, but bleeding does not always mean miscarriage and a missed miscarriage may cause no symptoms at all.

Related: When early pregnancy symptoms need urgent review →

No. Bleeding in early pregnancy is relatively common and many pregnancies continue normally afterward. But bleeding always deserves assessment, because some causes are serious.

Possible explanations include implantation bleeding, cervical changes or irritation (including after intercourse or a smear), infection, a subchorionic haematoma, threatened miscarriage, miscarriage in progress, and ectopic pregnancy.

Ectopic pregnancy is the reason bleeding should never simply be assumed to be a miscarriage. An ectopic pregnancy implants outside the uterine cavity, most often in a fallopian tube, and it can become life-threatening. Warning signs include:

• one-sided or severe abdominal or pelvic pain
• shoulder-tip pain
• dizziness, fainting or feeling very unwell
• bleeding with pain, particularly if you have not yet had a scan confirming the pregnancy location
• pain when opening the bowels or passing urine

Assessment usually involves a combination of clinical review, hCG measurement (sometimes repeated) and ultrasound. It is not always possible to be certain at the first visit, which is why follow-up instructions matter.

If you are bleeding in early pregnancy, contact your maternity unit, early pregnancy assessment service or doctor and go to emergency care if you have severe pain, heavy bleeding or feel faint.

Key takeaway: Bleeding does not always mean miscarriage, but it should always be assessed partly to rule out ectopic pregnancy, which is a medical emergency.

Related: Tubal factors and ectopic pregnancy risk →

There are generally three approaches, and where the clinical situation allows, the choice often involves your preference as well as medical factors.

• Expectant management waiting for the pregnancy tissue to pass naturally, with follow-up to confirm the process is complete. It avoids medication and procedures, but timing is unpredictable and it is not successful for everyone.
• Medical management medication to help the uterus expel the pregnancy tissue. It is more predictable than waiting, and usually involves bleeding and cramping over a period of hours to days.
• Surgical management a procedure to remove the pregnancy tissue, performed under local or general anaesthesia depending on the setting. It is the quickest to complete and is sometimes recommended for heavy bleeding, infection or when other approaches have not worked.

The right option depends on the type of miscarriage, how far the pregnancy had progressed, bleeding, signs of infection, your medical history, what services are available and how you feel about each approach. There is no single correct choice, and it is entirely reasonable to ask about the risks, expected recovery and follow-up for each.

Follow-up matters in all three: your clinician may check that the process is complete, sometimes with repeat scanning or hCG testing. Ask what bleeding is expected, what would be excessive, when to seek urgent help, and when you can resume normal activities and intercourse.

Serious complications are uncommon, but seek urgent care for very heavy bleeding, severe pain, fever or feeling unwell.

Key takeaway: Expectant, medical and surgical management are all valid routes. The right one depends on your clinical situation and your own preferences.

Related: What to ask your clinician about recovery →

Progesterone is not a general miscarriage-prevention treatment for everyone. However, evidence supports its use in a specific situation: women with early pregnancy bleeding who have had one or more previous miscarriages.

Large randomised trials have examined vaginal progesterone in early pregnancy. In women with threatened miscarriage (early bleeding) and a history of previous loss, progesterone showed benefit, with greater benefit in those who had experienced more previous miscarriages. In women with unexplained recurrent miscarriage but no bleeding in the current pregnancy, trial evidence did not demonstrate a clear overall benefit.

This nuance matters, because progesterone is often prescribed far more broadly than the evidence supports and equally, sometimes withheld from women who would fit the group most likely to benefit.

Two other important points. Low progesterone is often a consequence rather than the cause of a pregnancy that is not developing normally, so a single low reading does not automatically mean supplementation would have changed the outcome. And progesterone cannot correct a chromosomal abnormality in the embryo, which is what underlies a large proportion of early losses.

If you have had a previous miscarriage and are bleeding in early pregnancy, this is worth raising with your clinician promptly it is one of the few situations where a specific evidence-based intervention exists.

Key takeaway: Progesterone is not for everyone, but evidence supports it for women with early pregnancy bleeding plus a history of previous miscarriage.

Related: Understanding progesterone and early pregnancy →

Grief after miscarriage is real, and its intensity is not determined by how many weeks the pregnancy lasted. You do not need to justify how much this affected you.

People experience it very differently sadness, numbness, anger, guilt, relief followed by guilt about the relief, anxiety about trying again, or a sense of isolation because the pregnancy was never public. Grief also tends to arrive in waves rather than fading steadily, and dates such as the due date or the anniversary of the loss can bring it back sharply.

Partners grieve too, often differently and often silently, because they feel they should be the one providing support. Different grieving styles within a couple can be misread as not caring. Saying plainly what you each need space, distraction, conversation, practical help prevents a great deal of hurt.

Some things that help: allowing the loss to be named and acknowledged; limiting time in spaces that increase distress, including social media and fertility forums; being honest with close friends about what support is useful; and giving yourself permission to decline baby showers and similar events without explanation.

Seek professional support if distress is persistent or worsening, if you cannot function at work or at home, if anxiety about a future pregnancy feels overwhelming, or if you have thoughts of harming yourself that last one warrants urgent help, not waiting. Counselling and peer support are not signs that you are coping badly; they are appropriate care after a loss.

Key takeaway: Grief after miscarriage is legitimate regardless of gestation, affects both partners, and deserves proper support rather than being minimised.

Related: Hearing from couples who have been through loss →