Can You Get Pregnant With One Ovary? | Fertility Facts

Many people with one healthy ovary still ovulate and can get pregnant, with chances shaped by age and egg supply.

Hearing “you have one ovary” can land like a punch. The next thought is usually simple: can I still have a baby? In many cases, yes. One ovary can release an egg, make the hormones that run your cycle, and keep things moving.

This piece breaks down what changes with one ovary, what stays the same, and how to try for pregnancy with less guesswork.

What One Ovary Can Still Do

Your ovaries do two main jobs: they release eggs (ovulation) and they make hormones that help run your menstrual cycle. If one ovary is healthy, it can keep doing both jobs.

Ovulation is a single-egg event. In a typical cycle, one ovary releases one egg. With one ovary, the remaining ovary can still release an egg, so the basic path to pregnancy stays intact: sperm meets egg around ovulation, then a fertilized egg travels to the uterus and implants.

Timing still matters. Sex in the few days before ovulation gives sperm time to be in place when the egg is released. ACOG’s ovulation timing article explains the fertile window in plain language.

Can You Get Pregnant With One Ovary? Real-World Changes

The short version: one ovary often means fewer total eggs in the body, not half the chance in each cycle. The longer version depends on why you have one ovary and what else is going on in the pelvis.

If you were born with one ovary or had one removed, the remaining ovary may keep cycles regular and may ovulate most months. If cycles are irregular, the driver is often the underlying condition that led to surgery, like endometriosis, ovarian torsion, or prior infection.

There’s also a mechanical piece people miss: the fallopian tubes. If you have one ovary and at least one working tube that can pick up the egg, pregnancy is still possible. If the tube on the remaining ovary’s side is blocked or removed, it can reduce the odds, even when the ovary itself is working.

Common Reasons Someone Has One Ovary

How you got here shapes what to watch next. These are common scenarios:

• Born with one ovary: Discovered during imaging for another reason.
• Unilateral oophorectomy: One ovary removed during surgery.
• Cyst surgery: A cyst removed and some ovarian tissue lost.
• Torsion: Twisting cuts blood flow; sometimes the ovary can’t be saved.
• Endometriosis: Disease and surgery can affect ovaries and tubes.

If your situation includes an oophorectomy, it helps to know the terms: unilateral means one ovary removed; bilateral means both removed. Mayo Clinic’s oophorectomy page lays out that vocabulary and the basics.

Egg Quantity Versus Egg Quality

Egg quality is tied strongly to age. Egg quantity is your remaining “stock” of eggs. With one ovary, total stock can be lower. That can show up as a lower anti-Müllerian hormone (AMH) level or a lower antral follicle count (AFC) on ultrasound.

These tests help estimate how many follicles may respond to meds. They don’t predict whether you will conceive in a given month. ASRM’s ovarian reserve testing guidance explains what AMH, FSH, and AFC can and can’t tell you.

What Studies Say In Treatment Settings

In IVF settings, a history of unilateral oophorectomy can be linked to fewer eggs retrieved and, in some analyses, lower pregnancy or live-birth rates compared with people who have two ovaries. That doesn’t mean IVF won’t work. It means the starting pool may be smaller and the plan may need more than one cycle. Fertility and Sterility’s review on unilateral oophorectomy and IVF outcomes summarizes the evidence and why results vary.

Clues Your Remaining Ovary Is Ovulating

You don’t need fancy testing to spot basic patterns. These clues can help:

• Predictable periods: cycles land in a similar range month to month.
• Ovulation test surge: an LH positive line that repeats around a similar cycle day.
• Mid-cycle mucus change: clear, stretchy cervical mucus in the fertile window.
• Temperature shift: a sustained basal temperature rise after ovulation.

If you see repeated long cycles, no LH surge, or bleeding that drags on, it’s a reason to talk with a clinician about what’s driving it.

Fertility Scenarios With One Ovary

Use this table to spot what matches your situation and to frame questions for care.

Situation	What It Often Means	Next Move
Born with one ovary and regular cycles	Ovulation often continues monthly; hormones can stay steady	Track ovulation for 2–3 cycles to learn your pattern
One ovary removed, one tube intact	Natural conception often remains possible	Try timed sex for several cycles
Tube on remaining side blocked or removed	Egg pickup can be limited even if ovulation happens	Ask about tubal patency testing
Endometriosis history	Adhesions and inflammation can affect tubes and egg release	Bring operative notes; ask about tube status
Cyst surgery with reduced tissue	Ovary may function with a smaller follicle pool	Use AMH and AFC to frame timing
Irregular cycles	Can reflect PCOS, thyroid issues, low reserve, or healing after surgery	Check basic labs and track 2–3 cycles
Age 35+ with one ovary	Age-related egg quality decline can matter more than ovary count	Shorten the “try on your own” window
Repeated pelvic pain	May point to endometriosis, cysts, or adhesions	Ask whether imaging or referral is needed

How To Try For Pregnancy With One Ovary

When people struggle, it’s often timing, tube issues, sperm factors, or ovulation that isn’t happening. A plan helps you avoid months of guessing.

Step 1: Get Timing Under Control

Give yourself two or three cycles of simple tracking:

• Mark cycle day 1 as the first day of bleeding.
• Use ovulation predictor kits starting a few days before the expected fertile window.
• Have sex every 1–2 days during the fertile window, with extra attention to the day of the LH surge and the day after.

Step 2: Check The “Hidden” Roadblocks

Bring these up early if they fit your history:

• Prior pelvic infection or chlamydia (raises the chance of tube scarring).
• Prior abdominal surgery (can mean adhesions).
• Pain with periods or sex (can point to endometriosis).
• Partner factors (a semen analysis can be done early).

Step 3: Know When To Get An Evaluation

Many clinicians suggest an evaluation after 12 months of trying if you’re under 35, or after 6 months if you’re 35 or older. If cycles are irregular, endometriosis is known, tube issues are suspected, or sperm concerns exist, getting checked sooner can save time.

Tests That Help Answer The Big Questions

Testing can feel like a maze. A straightforward set often covers the basics: ovulation, tubes, and sperm.

• Ovarian reserve: AMH blood work and antral follicle count help frame timing and treatment response.
• Ovulation proof: progesterone about a week after ovulation can confirm it happened.
• Tubes: an HSG checks whether dye passes through the fallopian tubes.
• Sperm: semen analysis checks count and movement.

Options If Pregnancy Isn’t Happening

One ovary does not block treatment. The main question is which step fits your test results and timeline.

• Ovulation meds: helps when ovulation is infrequent or timing is unclear.
• IUI: places washed sperm in the uterus around ovulation.
• IVF: can bypass tube issues and can help when time is tight; fewer eggs may be retrieved with one ovary, yet pregnancy is still possible.

Practical Checklist For The Next 90 Days

This table pulls the moving parts into one place so you can keep the plan simple.

Time Frame	What To Do	What You Learn
Weeks 1–2	Pick a tracking method: calendar + LH tests	Cycle length and likely fertile window
Weeks 2–6	Have sex every 1–2 days in the fertile window	Whether timing is consistent
Weeks 4–8	If cycles vary, ask about progesterone timing	Confirmation of ovulation
Weeks 6–10	Arrange semen analysis early if you can	Whether sperm factors need attention
Weeks 8–12	If risks exist, ask about HSG timing	Whether tubes are open
By month 6 (age 35+)	Schedule fertility evaluation if no pregnancy	A plan with testing and next steps
By month 12 (under 35)	Schedule evaluation if no pregnancy	A clear path instead of guessing

Questions Worth Asking In Care

• Do I have at least one open tube, and do you recommend an HSG now or later?
• Do my cycle patterns suggest ovulation most months?
• Would AMH and antral follicle count change the plan, or is timing the main driver?
• If I need treatment, would you start with ovulation meds, IUI, or IVF based on my details?

When To Get Help Fast

Seek urgent care if you have severe one-sided pelvic pain with nausea, fainting, fever, heavy bleeding, or a positive pregnancy test with sharp pain and dizziness. Those can signal torsion, infection, or ectopic pregnancy.

Takeaway

One functioning ovary can still ovulate and lead to pregnancy. The parts that tend to matter most are age, tube status, sperm factors, and the condition that caused ovary loss. A simple tracking plan plus timely testing can turn a scary question into clear next steps.