AdvertisementThe Period Talk (For Adults)January 05, 2023Margaret CirinoEmily KwongGisele GraysonRebecca RamirezfacebookEmailThe menstrual cycle is a multi-stage process lasting an average of 28 days. The menses phase of the cycle, when the uterine lining is shed and vaginal bleeding occurs, typically lasts about 3 to 5 days. (Getty Images/Westend61)