Period blood also can be black, orange, green, or gray due to a co-occurring health condition. Some discharge colors can suggest a sexually transmitted infection (STI). What's typical for you may ...

Brown period blood is normal when it's at the beginning or end of your period. But you should see a doctor if you also experience unusual pain, a foul smell, or blood clots. If you have brown ...

Other symptoms of chlamydia and trichomoniasis include: Yellow, green, or other unusually colored discharge, which may mix with blood during your menstrual cycle Vaginal bleeding when not on your ...