Spotting between periods in perimenopause: what it can mean

Is spotting between periods normal in perimenopause? The common causes, why bleeding between periods or after sex is always worth checking, and what to expect.

By The Change Champions team · Updated 2026-10-01

Part of our guide: Irregular periods and cycle changes in perimenopause

You notice a little blood on your underwear, and your period isn't due for another two weeks. Or there's a streak of pink after sex that wasn't there before. It's light, it stops quickly, and you feel fine. But you're left wondering whether spotting between periods in perimenopause is just part of the change, or a sign of something else.

This article covers the common reasons for spotting in the years before menopause, why doctors still want to hear about it, and what usually happens when you get it checked. The aim is to help you act without panicking.

The short answer: spotting between periods is common in perimenopause, and it's often caused by shifting hormones, polyps, fibroids, hormonal birth control or hormone therapy. But bleeding between periods, bleeding after sex, and any bleeding after 12 months without a period should always be checked. Most of the time the cause is harmless, and a checkup is the only way to be sure.

Why spotting between periods happens in perimenopause

In perimenopause, ovulation becomes less regular and estrogen and progesterone rise and fall less predictably. The lining of your uterus may build up and shed at unexpected times, which can show up as light bleeding or spotting between periods. Our guide to irregular periods in perimenopause explains the wider pattern of changing cycles.

MedlinePlus lists many possible causes of bleeding between periods. These are some of the more common ones in midlife.

Changes in hormone levels. Uneven hormone levels during the transition can cause unscheduled bleeding.

Polyps and fibroids. Polyps are small growths on the cervix or in the lining of the uterus. Fibroids are growths in the muscle wall of the uterus. Both are usually noncancerous and can cause spotting.

Hormonal birth control. Using pills, patches or rings irregularly, such as skipping doses, can cause spotting. An IUD can cause occasional spotting too.

Hormone therapy. The Menopause Society notes that in women who are still having periods, hormone therapy may cause breakthrough bleeding. If you've recently started or changed treatment, tell your doctor about any spotting. Our guide to HRT for perimenopause explains more.

Infection or inflammation. Infection or inflammation of the cervix or uterus can cause bleeding between periods.

Irritation after sex. Injury to the vaginal opening during sex can cause light bleeding. MedlinePlus notes that vaginal dryness from low estrogen after menopause can also lead to bleeding.

Other health factors. Thyroid problems, blood thinners and stress are also on the MedlinePlus list.

Pregnancy. You can still get pregnant in perimenopause, and spotting can be linked to pregnancy, including a pregnancy that isn't going well. If there's any chance, take a pregnancy test. Our guide to pregnancy and contraception in perimenopause covers this.

Why bleeding between periods should always be checked

Most spotting in perimenopause turns out to have a harmless cause. So why do doctors want to know about it? Because a small number of cases are linked to changes that are much easier to treat when found early.

The CDC says uterine cancer may cause bleeding that isn't normal for you, including bleeding between periods and after menopause. ACOG, the American College of Obstetricians and Gynecologists, notes that heavy menstrual bleeding can be an early sign of endometrial cancer, which is cancer of the uterine lining. ACOG also says most cases are diagnosed in women in their mid-60s, after menopause, so it's much less likely during perimenopause. MedlinePlus lists cancer or precancer of the cervix or uterus among the less common causes of bleeding between periods.

Bleeding after sex needs its own mention. The CDC notes that cervical cancer may cause bleeding after sex, though early cervical cancer often causes no symptoms. As the CDC puts it, these signs may be caused by something other than cancer, but the only way to know is to see your doctor.

A checkup for spotting is usually reassuring. It's about ruling things out, not assuming the worst.

Spotting after 12 months without a period

Once you've gone 12 months in a row without a period, you've reached menopause. From that point on, bleeding is treated differently.

The Office on Women's Health says any type of vaginal bleeding after menopause is not normal and you should see a healthcare provider as soon as possible. The CDC says bleeding is never normal after your periods stop. This applies even if it's only a small spot, and even if it happens once. If you're taking hormone therapy, your doctor can tell you which bleeding pattern is expected and which needs checking.

What to expect when you get it checked

Your doctor will usually ask when the bleeding happens, how much there is, whether it follows sex, and whether you could be pregnant. It helps to bring notes on your recent cycles.

You may have a pelvic exam. Depending on your age and symptoms, tests can also include a pregnancy test, tests for infection, or an ultrasound. ACOG notes that some people need a closer look at the uterine lining with a hysteroscopy or an endometrial biopsy. Many people need only a few of these. If a cause such as a polyp or infection is found, it can usually be treated.

When to talk to a doctor

Book an appointment if you have:

Any bleeding between periods. Even if it's light or has only happened once or twice.

Bleeding after sex. Especially if it happens more than once.

Any bleeding after menopause. That is, after 12 months with no period.

Spotting with other symptoms. Such as pelvic pain, unusual discharge, fever, tiredness or dizziness.

Seek care right away if bleeding becomes very heavy. Call 911 if you're soaking through a pad every hour and feel faint or dizzy, or if you have severe pain and could be pregnant. For very heavy periods, see our guide to heavy periods in perimenopause.

Frequently asked questions

Is spotting a sign of perimenopause?

It can be. Uneven hormone levels in perimenopause can cause light bleeding between periods. But spotting has other causes too, including polyps, infection and pregnancy, so it's worth getting it checked rather than assuming it's the change.

Can perimenopause cause spotting after sex?

Spotting after sex can be caused by irritation or dryness, a cervical polyp, or an infection. Less often, it can be linked to changes in the cervix. The CDC advises seeing your doctor, because the only way to know the cause is to be examined.

Can hormone therapy cause spotting?

Yes. The Menopause Society says hormone therapy may cause breakthrough bleeding in women who are still having periods. Tell your doctor about any spotting on treatment so they can decide whether it needs checking or a change in your treatment.

Is spotting after menopause normal?

No. The Office on Women's Health says any vaginal bleeding after menopause is not normal and should be checked as soon as possible. Most causes are not serious, but a doctor needs to rule out problems with the uterine lining.

Your next step

Start a simple bleeding log today. Note the date of any spotting, how much there was, its color, and whether it followed sex, exercise or a new medicine. Book an appointment with your doctor or OB-GYN and take the log with you. Our guide to tracking perimenopause symptoms has ideas for keeping it easy.

If you'd like to see how spotting fits with other changes, try our symptom check-in.

This article is general information, not personal medical advice. If you have symptoms that worry you, please speak to your doctor.

Spotting between periods, bleeding after sex, and any bleeding after 12 months without a period should always be checked by a doctor, even if it's light.

Sources

Written by The Change Champions team, an independent educational site. Not reviewed by a clinician. How we write and fact-check.