Uterine Polyps and Fertility: Symptoms, Diagnosis & Treatment

Understanding the link between uterine polyps and fertility can help uncover subtle problems that might otherwise go unnoticed. This guide explains how these small growths can affect your chances of conceiving, how they are found, and how effective treatment can restore your fertility potential. At Yaal Fertility Centre in Chennai, Dr. Rukkayal Fathima and the team check the uterine cavity before every IUI or IVF plan, which is often when polyps first come to light.

What Are Uterine Polyps?

Uterine polyps, also called endometrial polyps, are soft, finger-like overgrowths of tissue that project from the inner lining of the uterus (the endometrium) into the cavity. They form when endometrial cells overgrow in one area.

In women of reproductive age, polyps are nearly always benign. In rare cases, particularly after menopause, some can show precancerous or cancerous change, so a removed polyp is normally sent to a laboratory for examination.

Polyps differ in how they attach and in size:

• Sessile polyps sit on the wall with a broad, flat base.
• Pedunculated polyps hang from a thin stalk.
• Size ranges from a few millimetres to several centimetres.

How Do Endometrial Polyps Develop?

Polyps are closely tied to the hormones estrogen and progesterone. Estrogen thickens the lining in the first half of the cycle. If estrogen is high or progesterone is too low to balance it, parts of the lining can overgrow and form polyps. They are made of glands, connective tissue and blood vessels.

Who Is Most at Risk?

• Estrogen dominance: conditions such as PCOS or cycles without ovulation.
• Age: polyps are more common in the 40s and early 50s.
• Obesity: fat tissue produces estrogen.
• High blood pressure and diabetes.
• Tamoxifen treatment for breast cancer.

What Are the Common Symptoms of Uterine Polyps?

Many women have no symptoms and polyps are found by chance during a fertility workup or scan. When symptoms occur, they are usually abnormal uterine bleeding, because polyps contain fragile blood vessels:

• irregular periods;
• spotting between periods;
• very heavy periods;
• bleeding after menopause;
• light bleeding after intercourse.

Can Polyps Cause Pelvic Pain or Cramping?

Pain is not typical, but a large or dangling polyp can trigger the uterus to contract as if to expel it, causing dull aching or cramps outside your period.

How Do Uterine Polyps Affect Fertility and Implantation?

Think of the uterus as soil in which the embryo must plant itself. Polyps can disturb that environment in several ways:

• Mechanical interference: a polyp near the point where the tube meets the uterus can obstruct sperm or embryo movement, and a large polyp can crowd the cavity and leave little healthy surface for an embryo to attach.
• Local inflammation: the body reacts to the polyp with a low-grade inflammatory response, making the local environment less friendly to sperm and embryos.
• Altered receptivity: studies suggest polyps can reduce the activity of genes and proteins (such as HOXA10) needed at the time of implantation.

Do Polyps Prevent Natural Conception?

They can lower the chance. Some couples with unexplained infertility find that a small, previously undetected polyp was a factor, and conceive after it is removed. See unexplained infertility.

The Impact of Polyps on IVF Success Rates

In IVF the tubes are bypassed, so the focus is on implantation. A polyp can reduce the chance of clinical pregnancy. High estrogen levels during stimulation can also make existing polyps grow. It is standard practice to remove a polyp found before embryo transfer. A free fertility assessment that includes a look at the uterine cavity can pick this up. See our IVF treatment page.

Do Uterine Polyps Increase the Risk of Miscarriage?

Polyps are associated with a higher risk of early pregnancy loss. If an embryo implants on or next to a polyp, the blood supply there is irregular, so the placenta may struggle to establish itself. The local inflammation can also continue into pregnancy.

There is encouraging evidence that removing polyps before conception can lower the miscarriage rate by restoring a smoother, healthier lining. See also recurrent pregnancy loss.

Uterine Polyps vs. Fibroids: What Is the Difference?

Polyps always sit inside or project into the cavity. Fibroids can grow outside the uterus, within the wall, or beneath the lining. See uterine fibroids and fertility.

How to Distinguish Polyps from Submucosal Fibroids

The two are treated differently: a submucosal fibroid comes from the muscle and needs a more careful dissection, while a polyp can be removed from the surface. On Doppler ultrasound a polyp usually shows a single feeding vessel, and a fibroid tends to show blood flow around its edge.

How Are Uterine Polyps Diagnosed?

Polyps usually cannot be felt on a pelvic exam, so imaging is needed:

1. Transvaginal ultrasound: the first screening test, but a small polyp can blend into a thick lining and be missed.
2. Saline infusion sonography (SIS): saline is placed in the cavity during ultrasound, so any polyp stands out against the fluid.
3. Diagnostic hysteroscopy: the standard test. A thin camera is passed through the cervix so the cavity can be seen directly. See our hysteroscopy guide and hysteroscopy service.

What Is Hysteroscopic Polypectomy and How Does It Help?

If you have a polyp and want to conceive, the usual recommendation is a hysteroscopic polypectomy: a minimally invasive procedure to remove the polyp while sparing the healthy lining. It is done through the natural opening of the cervix, so there are no abdominal cuts and usually little discomfort. Removing the polyp takes away the source of local inflammation and restores a smooth cavity.

What to Expect During the Procedure

It typically takes 15–30 minutes.

• Timing: ideally soon after your period ends, when the lining is thinnest and the view is clearest.
• Access: the cervix is gently opened and the hysteroscope is inserted, with fluid used to expand the cavity.
• Removal: small instruments (scissors, a loop or a shaver) remove the polyp at its base.
• Pathology: the tissue is sent to the laboratory to confirm it is benign.

Anaesthesia and Pain Management Options

Options range from local anaesthetic, to light intravenous sedation, to general anaesthesia for complex cases, depending on the number and size of polyps and your preferences.

Recovery and Timeline: When Can You Try to Conceive Again?

Recovery is quick. Mild period-like cramps and light spotting for a few days to a week are normal. To reduce the risk of infection, your doctor will usually advise avoiding tampons, douching, intercourse and swimming or baths until the spotting stops, usually one to two weeks.

Specialists commonly recommend waiting for one full normal menstrual cycle, so that the lining sheds and regrows over the treated area. After that you can usually resume natural attempts, IUI or IVF. Your doctor will confirm your own timeline.

Can Uterine Polyps Grow Back After Removal?

Polyps can recur, because the hormonal factors that caused them may still be present. Recurrence rates in studies vary widely, and are higher in women who had multiple polyps. If you have a history of recurrence and are having fertility treatment, your specialist may do a scan before each treatment cycle and may consider hormonal measures to reduce overgrowth.