Menstruation

Menstruation, also known as your period, is a shedding of the uterine lining once a month as part of a woman’s menstrual cycle. Menstruation typically lasts four to six days.

8 Reasons You're Spotting Between Periods

Light vaginal bleeding can be completely normal—but sometimes it's a signal that something's wrong. Here's what to know, and when to talk to your doc.