Medically reviewed by Dr. Rajeev Agarwal, MBBS, Medical Director: Infertility Specialist, IVF Expert and Gynaecologist at Renew Healthcare, Kolkata
Last updated: July 2026
In brief: Endometriosis is common, frequently diagnosed years late, and a significant cause of infertility, but most women with it can still conceive, many without IVF. The two things that matter most are getting diagnosed without waiting years, and understanding that treating pain and treating infertility are different goals with different, sometimes opposing, treatments.
The years lost before the diagnosis
The most striking thing about endometriosis is not the disease. It is the delay.
Across health systems worldwide, women wait years between their first symptoms and a diagnosis. In India that delay is often worse, because severe period pain is treated as a normal part of being a woman: by families, sometimes by doctors, and eventually by the women themselves.
So here is the sentence that should be repeated far more often:
Period pain that stops you from working, studying or functioning is not normal. It is a symptom.
Not every woman with painful periods has endometriosis. But every woman with disabling periods deserves to be taken seriously rather than handed painkillers for a decade.
What endometriosis is
Tissue similar to the lining of the uterus grows outside the uterus, commonly on the ovaries, the pelvic peritoneum, the ligaments supporting the uterus, and in more advanced disease on the bowel, bladder or ureters.
This tissue responds to hormonal cycling. It bleeds, it inflames, and over time it produces scarring and adhesions that can bind pelvic organs together.
Two forms matter particularly for fertility:
- Endometrioma: a cyst of old blood within the ovary, sometimes called a chocolate cyst
- Deep infiltrating endometriosis: nodules penetrating beneath the peritoneal surface, often the most painful form and the one requiring specialist surgery
Adenomyosis, where similar tissue is found within the muscle of the uterus itself, is a related but distinct condition that frequently coexists and has its own implications for implantation and pregnancy.
Symptoms, including the ones that get dismissed
- Severe period pain, often worsening over years
- Pain during or after intercourse
- Chronic pelvic pain between periods
- Pain on opening the bowels or passing urine, especially around periods
- Cyclical bowel or bladder symptoms
- Heavy or irregular bleeding
- Profound fatigue
- Difficulty conceiving
And one that upends most people's assumptions:
Symptom severity does not reliably predict the extent of disease. A woman with widespread endometriosis may have modest symptoms. A woman with limited disease may be in severe pain. Some women have no pain at all and are diagnosed only during investigation for infertility.
This is why "your pain isn't that bad, so it can't be endometriosis" is not sound reasoning.
Getting diagnosed: what has changed
Historically, diagnosis required laparoscopy, surgery to look inside the pelvis. That requirement contributed enormously to the delay, because it put a general anaesthetic between a woman and an explanation.
Current international guidance has moved away from that. Diagnosis and treatment can now begin on the basis of:
- A careful symptom history. The single most valuable diagnostic tool, and the most commonly rushed.
- Clinical examination, which may reveal tenderness or nodules, though a normal examination does not exclude disease.
- Transvaginal ultrasound, which in experienced hands detects endometriomas reliably and can identify deep disease. Operator skill matters enormously here.
- MRI, for mapping deep infiltrating disease before surgery.
- Laparoscopy, now reserved for cases where imaging is inconclusive, or where surgery is being performed for treatment.
Two things worth knowing:
A normal ultrasound does not rule out endometriosis. Superficial peritoneal disease is frequently invisible on imaging.
CA-125 is not a diagnostic test for endometriosis and should not be used as one.
How endometriosis affects fertility
Several mechanisms operate, often together, which is why treatment is rarely a single fix.
| Mechanism | What it does |
|---|---|
| Adhesions and distorted anatomy | Ovaries and tubes become tethered; the tube cannot pick up the egg |
| Impaired tubal function | Even open tubes may not transport properly |
| Inflammatory pelvic environment | Affects sperm function, egg quality and early embryo development |
| Reduced ovarian reserve | Particularly with endometriomas, and after ovarian surgery |
| Impaired implantation | Endometrial receptivity may be altered, including progesterone resistance |
| Pain limiting intercourse | Straightforward, frequently unmentioned, and genuinely relevant |
Staging systems exist, but the widely used surgical staging correlates poorly with both pain and fertility outcomes. A more useful tool for fertility planning is an index that combines surgical findings with age, duration of infertility and reproductive history to estimate the chance of natural conception after surgery. Ask your specialist whether that has been calculated for you.
The most important idea in this article
Treating pain and treating infertility are different goals, and the treatments can work against each other.
The mainstay of medical treatment for endometriosis pain is hormonal suppression: the combined pill, progestogens, hormonal coils, GnRH analogues. These work by suppressing the cycle.
They are also contraceptive. None of them will help you conceive, and taking them delays conception rather than assisting it.
This is a common and costly misunderstanding. Women are placed on hormonal suppression for pain, told it is "treating the endometriosis", and only later realise those months or years were also months of not being able to conceive.
If you have endometriosis and want to conceive, now or in the foreseeable future, that must be stated explicitly at every appointment, because it changes the entire treatment plan.
Say it out loud: "I want to conceive." It is the single sentence that determines which of two very different treatment pathways you are put on.
Surgery: when it helps fertility, and when it harms
Surgery is where the most nuanced decisions in endometriosis care are made.
Where surgery can help
- Minimal to mild disease: laparoscopic treatment of visible endometriosis produces a modest improvement in natural conception rates.
- Distorted anatomy and adhesions: restoring normal pelvic relationships can restore natural fertility.
- Deep infiltrating disease with severe symptoms: best managed in specialist centres with a multidisciplinary team.
- Hydrosalpinx coexisting: fluid-filled damaged tubes reduce IVF success and are usually treated before treatment.
Where surgery carries real risk to fertility
Endometrioma surgery is the key decision point.
Removing an ovarian endometrioma inevitably removes some surrounding ovarian tissue with it. That can reduce ovarian reserve, sometimes substantially, and permanently. AMH commonly falls after endometrioma surgery.
So the calculation is genuinely finely balanced, and depends on:
- Your age and current ovarian reserve
- The size of the cyst and whether it is causing symptoms
- Whether it obstructs access to follicles during egg collection
- Whether you have had ovarian surgery before, repeat surgery is where reserve is most damaged
- Whether there is any diagnostic uncertainty about the cyst
An endometrioma does not automatically need to be removed before IVF. In many cases IVF can proceed with the cyst in place. If surgery is being recommended before IVF, ask specifically what it is expected to achieve and what it may cost you in ovarian reserve.
And if you have already had one endometrioma surgery, be especially cautious about a second.
IVF with endometriosis
Endometriosis is not a barrier to IVF. It is one of the conditions IVF handles well, because IVF bypasses the tubes and the hostile pelvic environment entirely.
Points worth discussing with your specialist before planning a cycle:
- Ovarian reserve should be assessed before planning, particularly after previous surgery.
- Egg yield may be lower in women with endometriomas or prior ovarian surgery, which affects cycle strategy: accumulating embryos across cycles is often the sensible approach.
- Extended hormonal suppression before an IVF cycle is used by some centres in specific situations; its routine value is debated. Ask why, if it is proposed for you.
- Adenomyosis, where present, may need addressing separately as it can affect implantation.
- Frozen embryo transfer may allow the uterine environment to be optimised before transfer.
Deciding the order of things
This is the part couples find hardest: surgery first, or IVF first?
There is no universal answer, but these factors drive it.
| Factor | Points towards surgery first | Points towards IVF first |
|---|---|---|
| Age | Younger | Older |
| Ovarian reserve | Good | Reduced |
| Pain burden | Severe, dominating life | Mild or controlled |
| Previous ovarian surgery | None | Already had one or more |
| Anatomy | Distorted, adhesions, hydrosalpinx | Anatomy reasonably preserved |
| Male factor | Absent | Present |
| Time trying | Shorter | Longer |
The pattern that emerges: surgery makes most sense for younger women with good reserve, significant pain and no previous ovarian surgery. IVF makes most sense when reserve is reduced, age is pressing, or surgery has already been done once.
Fertility preservation: the conversation that happens too late
For young women with severe or bilateral endometriomas, or facing repeat ovarian surgery, egg or embryo freezing before surgery is worth discussing.
This conversation is very often not had, and women discover afterwards that their reserve has dropped and the option has narrowed. If you are young, have significant ovarian disease, and are not ready to conceive now, raise it yourself. You are entitled to the discussion.
Frequently asked questions
Can I get pregnant naturally with endometriosis?
Many women do. Mild disease in particular is compatible with natural conception, and the majority of women with endometriosis who want children have them, with or without treatment.
Does endometriosis always get worse?
Not necessarily. Progression varies considerably between women, and symptom severity does not track reliably with disease extent.
Will pregnancy cure my endometriosis?
No. Symptoms often improve during pregnancy and breastfeeding because of the hormonal changes, but the condition typically returns afterwards. Pregnancy is not a treatment.
Should I have my chocolate cyst removed before IVF?
Not automatically. Removal risks reducing ovarian reserve, and IVF can often proceed with the cyst in place. This needs an individual decision based on your age, reserve, symptoms and previous surgery.
Does the pill treat endometriosis?
It treats the pain by suppressing the cycle. It does not remove the disease, and it prevents pregnancy, so it is not appropriate while trying to conceive.
Can endometriosis come back after surgery?
Yes, recurrence is well recognised. This is one of the reasons repeat surgery is approached cautiously, particularly on the ovaries.
How do I get diagnosed without surgery?
Through a careful symptom history, examination, and a good-quality transvaginal ultrasound with an experienced operator. Current guidance supports beginning treatment without laparoscopic confirmation.
My periods have always been very painful. Is that just normal for me?
Pain that interferes with your normal life is not something to accept. Ask for it to be investigated properly rather than managed with painkillers indefinitely.
The bottom line
Endometriosis costs women years: first in delayed diagnosis, then sometimes in treatment aimed at the wrong goal.
Three things protect you against that. Get taken seriously early, because disabling period pain is a symptom, not a personality trait. Say clearly whether you want to conceive, because pain treatment and fertility treatment point in opposite directions. And be cautious about ovarian surgery, especially a second operation, because ovarian reserve does not grow back.
Most women with endometriosis who want to have children do. The condition changes the route more often than it changes the destination.
Get properly assessed: for pain and for fertility
Dr. Rajeev Agarwal manages endometriosis and endometriosis-related infertility at Renew Healthcare, Kolkata: diagnosis without unnecessary delay, honest discussion of surgery versus IVF, and ovarian reserve protected wherever possible.
Book a consultation: 062922 69060 | renewhealthcare.in | Ground Floor, 18 C, Mandeville Gardens, Ekdalia, Ballygunge, Kolkata, West Bengal 700019
This article is for general education and does not replace individual medical advice. Please consult a qualified specialist about your own situation.