Menstruation probably comes a few days to disappear

In general, women's menstrual cycle is 28-30 days, menstrual period is 3-7 days. Menstruation more than 7 days called menstrual period extension, menstrual period less than 3 days called menstrual period is too short, are abnormal phenomenon, need to go to the hospital in time. Menstruation more rest, do not overwork.