Monthly bleeding: Menstruation is the regular cyclical shedding of uterine (womb) lining associated with bleeding. Begins at puberty (menarche) and continus during a woman's fertile years until menopause. Cycles usually average 28 days, but can vary from 21 - 35 days.
Answered 12/3/2012
5.4k views
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question