Unusual Bleeding
Bleeding outside of a normal period, or bleeding after sex, has a long list of possible causes — and while STDs aren't the most common one, chlamydia and gonorrhea both make that list because of how they can irritate the cervix.
How chlamydia and gonorrhea cause this
Both infections can cause cervicitis — inflammation of the cervix — which makes the tissue more fragile and prone to light bleeding, especially after sex or a pelvic exam. This kind of spotting is often one of the only outward signs of an infection that otherwise causes no symptoms, which is part of why unexplained spotting is worth paying attention to rather than dismissing.
Other, more common causes
Hormonal birth control, especially in the first few months of starting or switching, is one of the most common causes of breakthrough bleeding and has nothing to do with an infection. Ovulation spotting, uterine polyps or fibroids, and simple friction during sex can all cause light bleeding too. The pattern that's harder to explain with any of those is bleeding that's new, recurring, or paired with unusual discharge or pelvic pain — that combination points more toward something worth testing for.
When It's Worth Testing
New or recurring bleeding between periods or after sex, especially alongside unusual discharge or pelvic discomfort, is worth testing for chlamydia and gonorrhea. It's also worth mentioning to a doctor regardless of the test result, since several non-STD causes need their own follow-up.
Related Testing Topics
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