Endometriosis affects up to 1 in 10 women — and 30-50% of women with infertility have it. Yet the average diagnostic delay is 7-9 years. If you have painful periods, painful intercourse, or have been trying to conceive without success, this article is for you.

How Endometriosis Affects Fertility

Endometriosis can affect fertility through several mechanisms: distorted pelvic anatomy from adhesions, ovarian reserve damage from endometriomas (chocolate cysts), altered peritoneal environment hostile to sperm and embryo, and impaired embryo implantation.

The severity is not always proportional to the impact. Some women with mild endometriosis have profound fertility problems. Others with severe disease conceive readily. Individual assessment is essential.

Should You Have Surgery Before IVF?

This is the single most important question — and there is no universal answer.

For young patients with painful endometriosis and good ovarian reserve, surgical excision of endometriosis often improves natural pregnancy rates. For women >35 with low AMH, IVF often takes priority — and ovarian surgery, if done, must be conservative to preserve eggs.

The wrong surgery is worse than no surgery. The right surgery — timed correctly, performed by an experienced excision surgeon — can be the single best fertility intervention.

Endometriosis Fertility Index (EFI)

The EFI is a scoring system that helps predict natural conception chances after surgery. It considers age, infertility duration, prior pregnancies, surgical findings, and tubal function. Honest EFI counselling helps couples decide between trying naturally post-surgery vs proceeding directly to IVF.

IVF Protocol Considerations for Endometriosis

IVF in endometriosis is technically more challenging. We adjust protocols based on disease severity: long agonist protocols may improve outcomes, freeze-all strategies often outperform fresh transfer, and surgical clearance before IVF is debated and individualised.

The Bottom Line

If you have endometriosis and are struggling to conceive, get a proper assessment from a clinician experienced in BOTH endometriosis surgery AND IVF. Most patients are not counselled honestly about the trade-offs. You deserve a structured plan, not a one-size-fits-all approach.