Spotting between periods is light bleeding that happens outside your normal menstrual flow, often appearing as pink, red, or brown spots when you wipe. It is frequently harmless — caused by hormonal birth control, ovulation, or hormone shifts — but it can also point to an infection or growth, so persistent or unexplained spotting deserves a provider's review.
What counts as spotting?
Spotting — sometimes called intermenstrual bleeding — is any small amount of bleeding that occurs between your regular periods. It is much lighter than menstrual flow and usually does not require a pad or tampon. Blood may look pink or bright red when fresh, or brown when it is older and leaves the body more slowly.
The key distinction is volume and timing: a period is a predictable, heavier flow, while spotting is light bleeding that shows up off-schedule. If you are tracking your cycle, learning how to track your menstrual cycle makes it easier to tell the two apart and spot patterns over time.
Common causes of spotting between periods
Most spotting has an everyday explanation. The causes below are among the most frequent.
Hormonal birth control
Starting, stopping, switching, or missing doses of hormonal contraception is one of the most common reasons for spotting. This "breakthrough bleeding" is especially common in the first three to six months on a new method and often settles on its own as your body adjusts. Extended-cycle and continuous pills are particularly associated with spotting in the early months of use.
Ovulation
Some people notice light spotting around the middle of their cycle, when an egg is released and estrogen briefly dips. This midcycle spotting is generally harmless. If you want to understand the timing, see ovulation and your fertile window explained and the common signs and symptoms of ovulation.
Early pregnancy
Light spotting can be an early sign of pregnancy, known as implantation bleeding, which may occur around the time a period would be due. Spotting during a known pregnancy, however, should always be reported to a provider promptly, as it can occasionally signal a problem.
Hormonal shifts and conditions
Natural hormone fluctuations — such as those during perimenopause or after stopping breastfeeding — can cause irregular bleeding. Underlying conditions that affect hormones, including PCOS and thyroid disorders, can also lead to spotting and other irregular periods.
Growths and infections
Non-cancerous growths such as polyps or fibroids in the uterus or cervix can bleed between periods. Sexually transmitted infections, including chlamydia, and other pelvic infections can also cause spotting, particularly after sex.
When spotting is a red flag
While much spotting is benign, certain patterns warrant medical attention. Contact a healthcare provider if you experience any of the following:
- Spotting that is heavy, frequent, or lasts longer than a few cycles
- Bleeding after sex
- Spotting with pelvic pain, fever, unusual discharge, or a foul odor
- Dizziness, fatigue, or signs of significant blood loss
- Any bleeding during pregnancy
- Any bleeding after you have reached menopause
Bleeding between periods or after sex can, in some cases, be an early sign of cervical or uterine cancer. This is uncommon, but it is exactly why providers recommend getting unexplained or persistent spotting checked rather than waiting.
What a provider may do
To find the cause, a healthcare provider may ask about your cycle, contraception, and symptoms, then carry out an examination. Depending on your situation, they might recommend a pregnancy test, STI screening, blood tests, a cervical screening test, or an ultrasound to look for polyps, fibroids, or other changes. Keeping a simple log of when spotting happens — and how it relates to your cycle, sex, or birth control — gives your provider valuable clues.
If your overall cycle has become unpredictable, it can help to understand what a normal menstrual cycle looks like and what counts as irregular, so you can describe the change clearly. You can find related guidance across our reproductive and menstrual health library.
The bottom line
Spotting between periods is common and frequently harmless — hormonal birth control, ovulation, and early pregnancy are among the usual explanations. Still, because spotting can also reflect an infection, a growth, or a hormonal condition, it should not be ignored when it is heavy, persistent, painful, or unexpected. Bleeding after sex, during pregnancy, or after menopause always deserves prompt attention. When in doubt, contact a healthcare provider; this article is general education, not a substitute for individualized medical advice.
