When a miscarriage happens once, there is grief, but often also a sense that it was a random event. When it happens twice, then three times, the grief deepens and is joined by confusion and fear. Couples want answers that make sense. Instead, they are often told to wait for a third loss before investigating, or they are given vague reassurance to just try again. In South India, where social pressure to conceive can be intense, the isolation of repeated loss can be particularly acute. Partners may grieve differently, one wanting to investigate immediately and the other needing time to process.

The truth is this: most couples who have experienced recurrent miscarriage go on to have a successful pregnancy with the right investigation and support. 60 – 70% of couples with unexplained recurrent miscarriage achieve a live birth in their next pregnancy. This is the most important fact to understand before anything else.

 

What Is Recurrent Miscarriage?

Recurrent Pregnancy Loss (RPL) is defined as two or more pregnancy losses before 20 weeks of gestation. Fertility specialists now recommend evaluation after two losses, particularly if the woman is over 35, the losses are consecutive, or the emotional toll of waiting for a third loss is significant.

Modern reproductive medicine has better tools and better understanding. If you have had two miscarriages, you deserve to begin investigation now, not wait.

The distinction is important: a single miscarriage is common and affects approximately 15% of confirmed pregnancies. It is usually due to a random chromosomal error in that specific embryo, and does not predict recurrence. Recurrent miscarriage, by contrast, suggests a pattern that warrants systematic evaluation.

 

Causes of Recurrent Miscarriage: What We Know

Recurrent miscarriage has multiple possible causes. The most important thing to understand is that not all causes are equally common, not all are treatable, and not all require investigation in every case. The workup should be guided by the clinical picture.

 

Cause	Frequency	Mechanism	Diagnostic Test
Embryonic chromosomal abnormality (random aneuploidy)	50-80% of individual losses	Embryo receives incorrect number of chromosomes during conception; cannot develop to term; random event, not inherited	Products of conception karyotyping if tissue available; does not require parental testing
Parental balanced translocation	2-5% of RPL couples	One partner carries a rearranged but balanced chromosome; can pass unbalanced version to embryo, causing recurrent losses	Karyotyping of both partners; genetic counselling; IVF with PGT-SR if indicated
Uterine structural abnormalities	10-15% of RPL	Septate uterus (most common), fibroids near cavity, polyps, Asherman’s (intrauterine adhesions)	3D ultrasound; saline sonohysterography; hysteroscopy (gold standard)
Antiphospholipid syndrome (APS)	8-42% of RPL	Auto antibodies cause clotting in placental vessels; restricts blood and nutrient supply to developing embryo	Anticardiolipin antibodies, lupus anticoagulant, anti-beta-2 glycoprotein on two occasions 12 weeks apart
Hormonal/endocrine causes	15% of RPL	Thyroid disease, PCOS with insulin resistance, uncontrolled diabetes, elevated prolactin, luteal phase defect	TSH, T3, T4, HbA1c, fasting glucose, prolactin, luteal phase progesterone
Male factor: sperm DNA fragmentation	Increasingly recognised	High sperm DFI causes fertilisation resulting in embryos with damaged DNA that cannot sustain development	Sperm DNA fragmentation index (DFI) test; TESA + ICSI if very high
Unexplained (idiopathic)	50% of all RPL	No identifiable cause found after comprehensive workup; may reflect subtle immune dysfunction or mosaic chromosomal abnormalities	By exclusion after full workup; 60-70% subsequent live birth rate with supportive care

Critical distinction: Studies states that Random embryonic chromosomal abnormality (50-80% of individual losses) is a random error in that specific pregnancy. It does not require parental investigation unless the couple has had multiple losses with products of conception testing showing aneuploidy. Parental balanced translocation (2-5% of RPL couples) is inherited and requires karyotyping of both partners. These are completely different situations with different management paths.

 

What Causes Most Miscarriages to Recur?

The question couples most want answered is: why does this keep happening to me? In many cases, consecutive losses may each have different causes, or may share a single underlying factor. Age plays an important role. As egg quality declines with age, the proportion of chromosomally abnormal embryos increases. Over 35, every year matters. For a 35-year-old woman, approximately 25% of embryos are chromosomally abnormal. By age 40, this rises to 40%. By age 45, it is 50%.

The gestational age at which losses typically occur provides a clinical clue. Early first-trimester losses (six to eight weeks) are more likely due to chromosomal abnormalities. Losses at ten to twelve weeks or later may suggest antiphospholipid syndrome, uterine structural issues, or cervical incompetence. This is why a doctor needs the full pregnancy loss history in detail, including the gestational age at which each loss occurred.

 

What Tests Are Recommended for Recurrent Miscarriage?

Not all tests are needed in all cases. The workup should be guided by the clinical picture and the red flags present in the history. However, some tests are strongly recommended for all couples with RPL.

Important caution: Some clinics in India offer extensive immune testing including NK cell counts, HLA matching, T cell subsets, and cytokine panels. International guidelines (SOGC 2025, ESHRE) do not recommend these as part of standard RPL investigation. There is no evidence these tests predict or guide RPL treatment. Similarly, routine inherited thrombophilia screening (Factor V Leiden, Protein C/S deficiency) is not recommended unless there is a personal or family history of clotting disease. Ask your doctor which test they are recommending and what the evidence is that it will guide treatment.

 

Test	What It Evaluates	When It Is Recommended
Karyotyping of both partners	Balanced chromosomal translocations or inversions that can cause unbalanced embryos	All RPL couples; especially if losses are recurrent at similar gestational age
3D transvaginal ultrasound, saline sonohysterography (SSG), or hysteroscopy	Uterine septum, polyps, submucosal fibroids, Asherman’s adhesions, congenital anomalies	All RPL couples; hysteroscopy is gold standard and allows simultaneous treatment
Antiphospholipid antibody panel (APLA)	Anticardiolipin antibodies (IgG/IgM), lupus anticoagulant, anti-beta-2 glycoprotein I antibodies	Strongly recommended for all RPL; must be confirmed on two occasions 12 weeks apart
Thyroid function (TSH, T3, T4)	Hypothyroidism or hyperthyroidism; TSH >2.5 mIU/L is associated with increased miscarriage risk in RPL	All RPL couples; target TSH <2.5 mIU/L before conception
HbA1c and fasting glucose	Poorly controlled diabetes; elevated HbA1c in first trimester significantly raises miscarriage risk	If diabetes or PCOS is suspected or known; not routine in all RPL
Progesterone (luteal phase, day 21)	Luteal phase deficiency or progesterone insufficiency in early pregnancy support	Relevant if suspected luteal defect; test alongside AMH and FSH for ovarian reserve context
Products of conception (POC) karyotyping	Whether the specific loss was due to a chromosomal abnormality in that embryo	When miscarriage tissue is available; highly informative; prevents unnecessary parental testing if abnormal
Sperm DNA fragmentation index (DFI)	High sperm DNA fragmentation in the male partner; correlates with RPL even when semen analysis is normal	Recommended in unexplained RPL; must include male partner evaluation
Prolactin level	Elevated prolactin (hyperprolactinaemia) which can impair progesterone production and endometrial preparation	If irregular cycles, galactorrhoea, or prior RPL with normal other tests

Note: Tests NOT recommended as routine RPL workup by SOGC (2025) and ESHRE guidelines: Inherited thrombophilia panel (Factor V Leiden, Protein S/C, MTHFR, prothrombin mutation) unless there is personal or family clotting history. Immune panels (NK cell counts, HLA matching, T cell subsets, cytokines) have no evidence and only be offered as a research context.

 

What Treatments Work? A Cause-by-Cause Guide

For each identifiable cause, there are advanced treatments with evidence. For unexplained RPL, supportive care significantly improves outcomes.

 

Cause	Treatment	Outcome	Evidence Level
Uterine septum, polyps, Asherman’s, submucosal fibroids	Hysteroscopic septum resection, polyp removal, adhesiolysis, myomectomy	60-80% of women conceive within 12 months of surgery; significant improvement in live birth rate	Strong consensus; well-established clinical benefit
Antiphospholipid syndrome (APS)	Low-dose aspirin (81-100mg/day) before conception + heparin injections once pregnancy confirmed	Live birth rates rise from 10-20% in untreated women to 70-90% in treated women, depending on treatment type and baseline risk profile.	Strong RCT evidence; SOGC, ESHRE, ASRM recommend
Hypothyroidism	Levothyroxine to achieve TSH <2.5 mIU/L before conception	Correction of thyroid function significantly reduces miscarriage recurrence; managed throughout pregnancy	Strong; international consensus standard pre-conception care in RPL
PCOS with insulin resistance	Metformin + progesterone support in early pregnancy	Reduces miscarriage risk; improves endometrial receptivity; insulin sensitisation reduces androgen-driven implantation failure	Moderate evidence; metformin and progesterone both supported by studies
Idiopathic RPL (unexplained)	Supportive care with early pregnancy monitoring, fortnightly scans, progesterone trial, folic acid	60-70% subsequent live birth rate with supportive monitoring alone; ‘tender loving care’ effect clinically real	Strong consensus; early monitoring and support are first-line
Parental balanced translocation	IVF with PGT-SR (preimplantation genetic testing for structural rearrangements)	Identifies euploid embryos; reduces transmission of unbalanced chromosomes; improves embryo selection	Moderate; discuss individualised benefit with specialist
Very high sperm DNA fragmentation	Testicular sperm extraction (TESE) + ICSI with lifestyle/antioxidant modification	Testicular sperm has lower DFI than ejaculated; improved embryo quality and reduced miscarriage rate	Emerging evidence; recommended in unexplained RPL with high DFI

Two treatments deserve special mention because they have dramatically improved outcomes and are highly specific:

Antiphospholipid syndrome (APS): If APLA testing is positive, treatment with low-dose aspirin before conception and heparin injections once pregnancy is confirmed has the most striking evidence in all of RPL medicine. Live birth rates rise from 10-20% in untreated women to 70-80% in treated women. This is one of the clearest success stories in reproductive medicine.

Uterine septum surgery: A septate uterus is the most common correctable anatomical cause of RPL. Hysteroscopic septum resection is a minimally invasive procedure performed under anesthesia. After surgery, 60-80% of women conceive within 12 months and there is significant improvement in live birth rates. This is one of the most rewarding interventions in fertility medicine because the cause is identified, treated, and outcomes improve reliably.

 

IVF and PGT-A: When Is This the Right Path?

Preimplantation genetic testing for aneuploidy (PGT-A) allows selection of chromosomally normal embryos before transfer. It reduces miscarriage rates from 30-40% per transfer to under 10%.

PGT-A with IVF is most clearly beneficial when: there is evidence from products of conception testing showing multiple losses were due to embryonic chromosomal abnormality, one partner has a parental karyotypic rearrangement (in which case PGT-SR is used), the woman is over 38 where aneuploidy rates are high, or there have been multiple failed IVF cycles with normal-looking embryos.

Important: PGT-A is not universally recommended for all RPL couples. There is no evidence it improves cumulative live birth rates compared to natural conception in younger women with unexplained RPL. It is a planning tool, not a guaranteed treatment. Discuss with your fertility specialist whether the cost-benefit equation makes sense in your specific situation.

 

The Emotional Reality of Recurrent Miscarriage

Recurrent pregnancy loss is one of the most painful reproductive experiences. The grief is legitimate and profound. In India, where social pressure to conceive is intense, the isolation of repeated loss can feel unbearable. Partners often grieve differently and may need different kinds of support. There is no ‘right’ way to process this loss.

Grief counselling and fertility-specific psychological support are not luxuries; they are part of appropriate medical care. At Sudha Fertility Centre, Dr. S. Dhanabagyam and Dr. S. Pradeepa provide emotional support and counselling alongside clinical treatment. It is equally important to acknowledge that men are also profoundly affected by pregnancy loss, and this is often missing from both medical care and social support. The male partner’s grief and his role in investigation deserve explicit recognition.

 

What Happens Next?

If you have had two or more miscarriages, the next step is a referral to a fertility specialist for RPL evaluation. Be prepared to provide detailed information about each loss: the date, how far along the pregnancy was, whether bleeding was heavy or light, and whether any tissue was retained that could have been tested. Bring any available medical records from previous pregnancies.

The investigation may take several weeks as some tests require timing (like APLA testing which must be repeated), but each test answers a specific question. At the end, you will either have a diagnosis and a treatment plan, or you will have a diagnosis of unexplained RPL and a plan for close monitoring and support in the next pregnancy.

Whatever the outcome, understand this clearly: most couples with recurrent miscarriage go on to have a successful pregnancy. The 60-70% live birth rate for unexplained RPL is not a small number. It is a strong reason for hope.

 

Your Path Forward

Recurrent miscarriage leaves couples exhausted, grieving, and often desperate for answers. You deserve both the emotional support and the clinical investigation that modern fertility medicine can provide. You deserve a specialist who acknowledges your grief, who investigates systematically, and who believes that your next pregnancy can be successful.

At Sudha Fertility Centre, our RPL specialists investigate each case thoroughly, explain every test result clearly, and build a personalised plan for your next pregnancy. Whether that involves medication, surgery, IVF, or close monitoring with support, the plan is tailored to your diagnosis and your needs. Sudha Fertility Centre has dedicated teams across Bangalore, Hyderabad, Chennai, and Coimbatore to provide the specialist evaluation and ongoing support couples with RPL deserve.

If a subsequent cycle is not successful, the team will review what happened, discuss what can be adjusted, and outline the next steps before any further decisions are made.

 

Disclaimer: This article is for general informational purposes and does not constitute medical advice. Recurrent pregnancy loss management must always be done in consultation with a qualified fertility specialist or reproductive endocrinologist based on individual assessment.