Can An Ovarian Cyst Cause Infertility? | What Changes Risk

Most ovarian cysts do not stop pregnancy, though PCOS, endometriomas, and some surgery can make conception harder.

Seeing “ovarian cyst” on an ultrasound can feel heavy when you’re trying to get pregnant. The good news is that most cysts are not the kind that block fertility. Many are linked to the normal menstrual cycle and fade on their own within a few weeks or months.

The part that trips people up is this: “ovarian cyst” is a broad label. A tiny follicle cyst is not the same thing as an endometrioma. A cyst tied to polycystic ovary syndrome is different again. That type difference is what decides whether fertility is untouched, mildly affected, or more seriously reduced.

This article breaks down which cysts matter, why they matter, and when it makes sense to get a fertility workup instead of waiting and guessing.

Can An Ovarian Cyst Cause Infertility? What Changes The Risk

Yes, an ovarian cyst can be linked with infertility in some cases, but the cyst itself is often not the whole story. Many cysts do not interfere with ovulation, egg quality, or the path sperm needs to travel. Others are tied to conditions that do affect those steps.

That is why doctors usually start with one basic question: What kind of cyst is it? Once that answer is clear, the next steps get much easier.

Types That Usually Do Not Affect Fertility

Functional cysts are the usual low-drama kind. These include follicle cysts and corpus luteum cysts. They form during the menstrual cycle, are common in the reproductive years, and often disappear without treatment. According to ACOG’s ovarian cyst guidance, many ovarian cysts are harmless and go away on their own.

Small dermoid cysts and cystadenomas may not affect fertility either, though size and location still matter. A larger mass can twist the ovary, crowd nearby structures, or push a surgeon toward removal.

Types More Closely Linked To Fertility Problems

The types that raise more concern are usually these:

• Endometriomas: cysts tied to endometriosis. These can be linked with lower fertility through inflammation, scarring, pain with sex, and damage to healthy ovarian tissue.
• PCOS-related ovarian changes: these are tied to irregular or absent ovulation, which makes getting pregnant harder.
• Large or persistent cysts: not always a fertility problem by themselves, but they may lead to surgery, and surgery can reduce ovarian reserve in some cases.

Mayo Clinic notes that some ovarian cysts are linked with lower chances of pregnancy, while many others are not. Their breakdown is useful because it separates the common, cycle-related cysts from the cysts tied to endometriosis or polycystic ovary syndrome: ovarian cysts and infertility.

How Different Ovarian Cysts Affect Fertility

Fertility depends on ovulation, open fallopian tubes, healthy eggs, sperm reaching the egg, and an embryo settling into the uterus. A cyst can affect one or more of those steps, or none at all.

That’s why two people can both have an ovarian cyst and have totally different fertility chances.

When The Problem Is Ovulation

PCOS is the clearest example. The trouble is not one large cyst sitting on the ovary. The trouble is a hormone pattern that throws off regular ovulation. No ovulation means no egg release that month, which means pregnancy cannot happen that cycle.

NICHD states that PCOS is the most common cause of anovulatory infertility. That makes PCOS one of the first things doctors think about when cyst-like ovarian changes show up with irregular periods, acne, extra hair growth, or weight gain: NICHD’s PCOS fact sheet.

When The Problem Is Ovarian Tissue

Endometriomas can affect the ovary itself. They may lower the amount of healthy ovarian tissue nearby, and treatment can be tricky because removing the cyst may also remove some normal ovarian tissue. That matters more if you already have a low egg supply, are in your late 30s, or have cysts on both ovaries.

When The Problem Is Pelvic Anatomy

Some cysts are linked with distortion around the ovary and fallopian tube. Endometriosis can also cause scarring in the pelvis. If the tube cannot pick up the egg well, natural conception gets harder even when ovulation is still happening.

Cyst Type	Usual Effect On Fertility	What Often Happens Next
Follicle cyst	Usually none	Watchful waiting and repeat scan if needed
Corpus luteum cyst	Usually none	Often fades without treatment
Hemorrhagic cyst	Usually none unless large or painful	Follow-up scan if symptoms or uncertain features
Dermoid cyst	Often none unless large	Surgery only if size, pain, or growth becomes an issue
Cystadenoma	Often none unless large	Monitor or remove based on symptoms and scan findings
Endometrioma	Can lower fertility	Plan depends on pain, size, ovarian reserve, age, and pregnancy goals
PCOS-related ovarian changes	Can lower fertility by blocking regular ovulation	Ovulation-focused treatment is often more useful than cyst treatment
Large persistent complex cyst	Variable	More testing, closer imaging review, and sometimes surgery

Signs The Cyst May Be Part Of A Fertility Problem

A cyst matters more in a fertility setting when it shows up alongside other clues. One isolated ultrasound finding does not tell the whole story.

• Irregular or missing periods
• Known endometriosis or pain that flares with periods
• Trouble trying for pregnancy for 12 months, or 6 months if age 35 or older
• Cysts on both ovaries
• Prior ovarian surgery
• Pelvic pain, pain with sex, or a history of pelvic infection

If those signs are present, the fertility issue may come from ovulation problems, endometriosis, reduced egg supply, tubal issues, or a mix of them.

When Surgery Helps And When It Can Backfire

This is where many people get stuck. Taking a cyst out sounds like the clean fix. Sometimes it is. Sometimes it is not.

Surgery can help when a cyst is large, keeps growing, causes pain, twists the ovary, has unclear ultrasound features, or blocks fertility treatment access. But ovarian surgery can also remove or damage healthy tissue. That can lower ovarian reserve, which is the number of eggs left in the ovaries.

That trade-off is one reason fertility-minded care can look different from general gynecology care. A person with an endometrioma who wants pregnancy soon may need a different plan than someone whose main problem is pain.

Questions Worth Asking Before Cyst Surgery

• What type of cyst does the scan suggest?
• Is this cyst likely to affect ovulation or egg supply?
• Would surgery improve pregnancy odds, or just remove the cyst?
• Should AMH or antral follicle count be checked first?
• Is referral to a fertility specialist smart before operating?

Situation	Why Fertility May Change	Typical Next Step
Small functional cyst with regular periods	Usually no real fertility effect	Repeat scan only if it does not settle
PCOS pattern with irregular cycles	Egg release may not happen regularly	Ovulation workup and cycle-focused treatment
Endometrioma with pain or infertility	Inflammation, scarring, or lower ovarian reserve	Plan based on age, reserve tests, symptoms, and timing goals
Large cyst needing surgery	Surgery may help symptoms but can reduce ovarian tissue	Balance symptom relief with pregnancy goals before operating
Trying for 6 to 12 months without pregnancy	Cyst may be one part of a wider fertility issue	Full fertility evaluation for both partners

What A Fertility Workup Usually Includes

If pregnancy is not happening and a cyst is in the picture, the workup often checks more than the ovary alone. That matters because infertility can have more than one cause at the same time.

Tests Your Clinician May Order

• Pelvic ultrasound to sort out cyst type, size, and change over time
• Ovulation clues from cycle history and hormone tests
• AMH or antral follicle count to estimate ovarian reserve
• Fallopian tube testing if tubal trouble is possible
• Semen analysis, since male factor is common too

If your periods are regular and the cyst looks functional, the answer may be simple watchful waiting. If your cycles are irregular or the cyst looks like an endometrioma, the next step is often more active.

When To Get Help Soon

Book an earlier review if you are 35 or older and have been trying for 6 months, if you are under 35 and have been trying for 12 months, or if you already know you have endometriosis, PCOS, prior ovarian surgery, or very irregular periods.

Get urgent medical care for sudden severe pelvic pain, vomiting, fainting, fever, or a swollen abdomen. Those symptoms can point to torsion, rupture, bleeding, or another urgent problem.

What This Means If You Want To Conceive

One ovarian cyst does not automatically mean infertility. In many cases, fertility is unchanged. The real issue is whether the cyst is a harmless cycle cyst, a marker of PCOS, a sign of endometriosis, or a mass that may push you toward surgery.

If you are trying to conceive, ask for the cyst type, not just the cyst size. That single detail often tells you far more about your next step than the ultrasound report alone.