Bleeding in Perimenopause: What's Normal, What to Get Checked

Most people have lived with their cycle for thirty-some years before perimenopause hits, and any change to a familiar pattern can feel alarming. The good news: most of the bleeding changes in perimenopause are explained by ovaries doing their normal-but-erratic thing on the way out.

The less-good news: not all of them. There are a few specific patterns that warrant evaluation, and a few signs that move from "monitor" to "see someone soon."

What's Typical in Perimenopause

Cycles in perimenopause stop being regular. Specifically, you might experience:

• Shorter cycles — periods coming every 21-25 days instead of every 28-30
• Longer cycles — skipping a month, then having one
• Heavier or longer flow — sometimes related to anovulatory cycles where estrogen builds up the lining without a progesterone counterbalance
• Lighter or shorter flow — also common, particularly later in perimenopause
• More PMS or worse cramps — hormonal swings can intensify both
• Spotting around ovulation or before periods

If you graphed your cycles over a year of perimenopause, the pattern would look chaotic — and that chaos is, in itself, normal.

What's Not Typical (And Worth Evaluating)

A few specific patterns warrant a visit:

Bleeding more often than every 21 days for several cycles. Frequent bleeding can be hormonal, but it can also point to a polyp, fibroid, or thickened uterine lining.

Bleeding that lasts longer than 7-8 days. Especially if it's a change from your usual.

Soaking through a pad or tampon every hour for several hours in a row. This is heavy enough to risk anemia and warrants prompt evaluation.

Passing large clots regularly. Occasional small clots are normal during heavy days. Frequent large clots are not.

Bleeding between periods that becomes a pattern. Occasional spotting can be hormonal. Persistent intermenstrual bleeding deserves a look.

Bleeding after sex that keeps happening. Once or twice can be GSM-related vaginal tissue changes (especially if you also have dryness or pain). A pattern needs evaluation.

Any bleeding after you've reached menopause. Once you've gone 12 consecutive months without a period, any bleeding after that — even a single episode — should be evaluated. This is the most important rule on the list.

What Could Be Causing It

When something is causing bleeding beyond normal hormonal fluctuation, the differential includes:

Fibroids — benign muscle tumors of the uterus, very common, often cause heavier or longer bleeding

Polyps — small growths in the uterine lining, can cause spotting, bleeding between periods, or post-menopausal bleeding

Adenomyosis — endometrial tissue growing into the uterine muscle, causes heavy painful periods

Endometrial hyperplasia — thickening of the uterine lining, can be a precursor to endometrial cancer

Endometrial cancer — uncommon but the reason post-menopausal bleeding is taken seriously every time

Cervical issues — including polyps, cervical infections, or cervical cancer (cervical screening is part of any bleeding workup)

Thyroid issues or bleeding disorders — sometimes show up as abnormal bleeding

Pregnancy — yes, still possible in perimenopause, and worth ruling out

What an Evaluation Looks Like

A workup for abnormal bleeding usually includes:

• A thorough history (cycle pattern, symptoms, family history)
• A physical and pelvic exam
• Pregnancy test if reproductive age
• Bloodwork (CBC for anemia, thyroid, sometimes others)
• Pelvic ultrasound to evaluate the uterus and ovaries
• Endometrial biopsy if the lining looks thickened or for any postmenopausal bleeding

Most of this can be done in an outpatient setting. Endometrial biopsy is a brief procedure done in the office — and at our practice, it's offered with the same comfort measures we use for IUD insertions, including nitrous oxide, TENS, heating pads, and cervical block.

When to Come In Soon (Not "Wait for Annual")

• Heavy bleeding that's making you feel weak, dizzy, or short of breath
• Postmenopausal bleeding of any amount
• Bleeding with severe pelvic pain
• Bleeding during pregnancy or possible pregnancy

When to Come In But It's Not Urgent

• Cycle changes that are bothering you
• Bleeding patterns that have shifted and you want answers
• Any change you're not sure about

Booking

Schedule online for an evaluation, in-office in Kensington, MD or via telehealth. If you have specific concerns, send us a message first and we'll help you figure out the right kind of visit.

You may also want to read about perimenopause symptoms more broadly or hormone therapy options.