Losing a pregnancy is painful, and losing more than one can leave you feeling confused, anxious and alone. Recurrent miscarriage, also called recurrent pregnancy loss, affects only a small percentage of couples. Many of them go on to have a healthy baby with the right evaluation and care. It is also not caused by anything you did or did not do. Understanding the possible causes, knowing which tests are useful and learning what treatment can offer can help you take the next step with confidence.

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Key Takeaways

  • Recurrent miscarriage is generally defined as the loss of two or more pregnancies, and it affects a small proportion of couples. 
  • The most common reason for a single miscarriage is a chromosomal abnormality in the embryo. This is usually a matter of chance and not caused by anything the parents did. 
  • Possible causes include genetic factors, antiphospholipid syndrome, uterine abnormalities, hormonal or metabolic conditions and lifestyle factors. In about half of couples, no cause is found. 
  • A structured evaluation of both partners can identify treatable causes. 
  • Even when no cause is found, the chance of a successful pregnancy with supportive care remains good. 
  • Emotional support is an important part of treatment, not an optional extra. 
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Table of Contents

What Is Recurrent Miscarriage?

A miscarriage is the loss of a pregnancy before 20 to 24 weeks, depending on the guideline used. Recurrent miscarriage means two or more pregnancy losses. Some definitions require the losses to be consecutive and others do not. International guidelines such as those from ESHRE recommend starting an evaluation after two losses, not waiting for a third. 

The term covers a wide range of experiences. Some women lose pregnancies very early, in the first few weeks. Others lose pregnancies later in the first trimester or in the second trimester. The timing of the losses can give your doctor useful clues about the cause.

How Common Is Recurrent Miscarriage?

About one in four to five recognised pregnancies ends in miscarriage, and most of these happen once, by chance. Two consecutive losses affect roughly 1 to 3 percent of couples, and three or more losses affect around 1 percent. The risk rises with maternal age, particularly after 35, because the chance of chromosomal errors in eggs increases. 

Having a miscarriage once does not mean you will have another. Most women who have had one or two miscarriages go on to have a successful pregnancy.

Causes of Recurrent Miscarriage

There is rarely a single, simple reason. Several factors can contribute, and in about half of couples the cause stays unexplained even after full testing. 

Genetic and chromosomal factors 

 Most early miscarriages are caused by chromosomal abnormalities in the embryo, which are usually random events. In a small number of couples (a few percent), one partner carries a balanced chromosomal rearrangement, such as a translocation. The partner is healthy, but the embryos may receive too much or too little genetic material. 

Antiphospholipid syndrome (APS) 

 APS is an autoimmune condition in which antibodies in the blood increase the risk of clotting, including clots in the placenta. It is one of the most important treatable causes of recurrent miscarriage. 

Uterine and structural factors 

 These include a uterine septum, intrauterine adhesions, submucosal fibroids or polyps that distort the uterine cavity, and a weak cervix (cervical insufficiency), which is more often linked to second-trimester losses. Procedures within the laparoscopic and gynaecological surgery range can correct many of these problems. 

Hormonal and metabolic factors 

 Thyroid disorders, poorly controlled diabetes, raised prolactin and conditions such as PCOS can influence pregnancy outcomes. These are often manageable once identified. 

Lifestyle factors 

 Smoking, heavy alcohol use, high caffeine intake and obesity are associated with a higher risk of pregnancy loss. Making changes may help, but lifestyle alone does not explain most recurrent losses. 

Male factors 

 Research suggests that high sperm DNA fragmentation may be linked to pregnancy loss in some couples. This is an area where evidence is still developing, and a male fertility evaluation can help decide whether testing is appropriate. 

Other factors 

 Chronic infection or inflammation of the uterine lining (chronic endometritis) and certain immune factors are sometimes investigated. The evidence for many immune tests and treatments is limited, so they should be discussed carefully with a specialist. 

When Should You See a Specialist?

Consider an assessment if: 

  • You have had two or more pregnancy losses. 
  • You have had a loss after a heartbeat was seen on ultrasound, or a loss in the second trimester. 
  • You are over 35 and have had a miscarriage. 
  • You have an autoimmune, thyroid or clotting condition, or a family history of recurrent loss. 

Seeking help sooner does not mean something is definitely wrong. It simply gives you information and a plan. 

Tests for Recurrent Miscarriage

Evaluation should look at both partners and should be guided by your history. Commonly used tests include: 

  • Antiphospholipid antibody tests: lupus anticoagulant, anticardiolipin antibodies and anti-beta-2 glycoprotein I antibodies. Positive results need to be repeated after at least 12 weeks to confirm. 
  • Pelvic ultrasound, including 3D ultrasound: to assess the shape of the uterus and look for fibroids, polyps or a septum. 
  • Hysteroscopy or saline sonography: to look inside the uterine cavity when an abnormality is suspected. 
  • Thyroid tests (TSH and thyroid antibodies): because thyroid problems are common and treatable. 
  • Blood sugar assessment (HbA1c) and prolactin: to screen for metabolic and hormonal causes. 
  • Genetic testing (karyotype) of both partners: this may be considered in selected cases, such as a family history or a previous chromosomally abnormal pregnancy. 
  • Testing of pregnancy tissue: if a miscarriage happens, genetic analysis of the tissue can sometimes explain the loss. 
  • Semen analysis, with sperm DNA testing where appropriate: to include the male partner in the evaluation. 

Not every test is needed for every couple, and some commonly offered tests, such as routine screening for inherited clotting disorders, are not recommended by major guidelines when there is no personal or family history. A specialist can tailor the plan to avoid unnecessary or unproven testing. 

Treatment Options for Recurrent Miscarriage

Treatment depends on what is found. 

Treating antiphospholipid syndrome 

 Women with confirmed APS are usually offered low-dose aspirin and a blood-thinning injection (low-molecular-weight heparin) during pregnancy under specialist supervision. 

Correcting uterine abnormalities 

 A uterine septum, adhesions or polyps can often be treated with a minimally invasive hysteroscopic procedure. If a weak cervix is suspected, a cervical stitch (cerclage) may be considered in selected cases. 

Managing hormonal and metabolic conditions 

 Thyroid hormone replacement, blood sugar control and treatment of high prolactin can support a healthier pregnancy. 

Genetic counselling 

 If a chromosomal rearrangement is identified in one partner, a genetic counsellor can explain the chances of a healthy pregnancy and the options available, including natural conception with early monitoring or IVF with genetic testing of embryos. 

Supportive care and early monitoring 

 When no cause is found, close early pregnancy care, reassurance and emotional support are important. Studies show that couples with unexplained recurrent miscarriage still have a good chance of a live birth in a future pregnancy. In some situations, such as bleeding in early pregnancy with a history of miscarriage, progesterone support may be considered, but it should be used only on medical advice. 

Can IVF Help With Recurrent Miscarriage?

IVF is not a treatment for recurrent miscarriage in itself, and it is not automatically recommended. It may be considered when there is also difficulty conceiving, when the woman is older, or when a known genetic cause means embryos need to be tested. For couples carrying a chromosomal rearrangement, preimplantation genetic testing for structural rearrangements (PGT-SR) can help select embryos with a balanced chromosome complement. 

For women with unexplained recurrent miscarriage, routine genetic screening of embryos (PGT-A) has not been shown to improve live birth rates and is not generally recommended. You can read more about IVF and assisted reproduction options, or compare IUI vs IVF to understand how the treatments differ.

Lifestyle and Emotional Support

Healthy habits cannot undo a miscarriage or guarantee a future pregnancy, but they can support overall health: 

  • Take folic acid before and during early pregnancy, as advised by your doctor. 
  • Avoid smoking and alcohol, and limit caffeine. 
  • Aim for a healthy weight through balanced nutrition and regular activity. 
  • Manage existing conditions such as thyroid disease or diabetes with your doctor. 

Recurrent loss also takes an emotional toll. Grief, guilt, anxiety and strain on a relationship are common. Talking to a counsellor, joining a support group or simply sharing your feelings with someone you trust can help. Please remember that miscarriage is not caused by stress, exercise, travel or something you did. 

Disclaimer

This article is intended for general educational purposes only and does not replace professional medical advice, diagnosis, or treatment. The causes of miscarriage, the tests needed and the treatments suitable vary from person to person. Consult a qualified healthcare professional for an individual assessment before starting any medication, test or fertility treatment. 

Final Thoughts

Recurrent miscarriage is difficult, but it is not a dead end. A careful evaluation can find treatable causes in many couples, and even when no cause is found, the outlook for a future pregnancy is often encouraging. The most important steps are to seek assessment after two losses, undergo appropriate and evidence-based testing, and get compassionate care along the way. 

For couples seeking fertility guidance in Aundh, Pune, Elpis IVF Center & Maternity Hospital can be contacted to enquire about available consultation and evaluation services. Our diagnosis and consultation service is a good first step, and our maternity and delivery care team can support you through a future pregnancy. 

Learn more about our fertility services and book your consultation today: https://elpisivfclinic.com/ 

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FAQs

(Frequently Asked Questions)

How many miscarriages are considered recurrent?

Recurrent miscarriage is generally defined as two or more pregnancy losses. Current international guidelines support starting an evaluation after two losses, so you do not need to wait for a third. 

Chromosomal abnormalities in the embryo are the most common cause of miscarriage overall. For recurrent miscarriage, the cause varies, and in about half of couples it remains unexplained even after complete testing. Treatable causes include antiphospholipid syndrome, uterine abnormalities and thyroid or metabolic conditions. 

There is no good evidence that everyday stress, moderate exercise, travel or sex causes miscarriage. Pregnancy loss is usually due to factors outside a woman’s control. 

Common tests include antiphospholipid antibody testing, a pelvic or 3D ultrasound, thyroid and blood sugar tests, and, in selected cases, genetic testing of both partners. Your doctor will decide which tests are appropriate for you. 

Yes. Many couples go on to have a healthy baby, including those with unexplained recurrent miscarriage. The chance of success depends on age, the cause (if found) and the number of previous losses, and early specialist care can help. 

Many women can try again after one normal period, but readiness is also emotional. Discuss timing with your doctor, especially if investigations are still in progress.