That depends on the woman. Some women have three-day periods, some five-day and some seven and some have other durations. There's no one set duration. *another answer* It also depends on how long you've had your periods. I got mine when I had just turned 12, and they were really irregular and lasted for different amounts of time. Im fifteen now and I get my periods every four weeks and they last for about 5 days. But when you only just get your periods dont expect them to arrive every 28 days like clockwork :)
3-5 days
menstruation
Menses will begin when the body is ready for it to happen. Menstruation begins on a certain day in a 28 day cycle when it is normal. The initial onset of menses happens when a young girl is developing and going through puberty.
The duration of Act Normal is 1.33 hours.
The duration of So Normal is 1.5 hours.
The duration of Norman Normal is 360.0 seconds.
The duration of Perfectly Normal is 1.78 hours.
The duration of Almost Normal is 1.5 hours.
The duration of Normal Life is 1.68 hours.
The duration of Normal Adolescent Behavior is 1.58 hours.
The duration of Ab-normal Beauty is 1.47 hours.
The duration of Normal People Scare Me is 1.5 hours.
The duration of Y B Normal? is 1380.0 seconds.