The menstrual period is the phase during which bleeding and flaking of the outer lining of the uterus occurs, marking the beginning of a new menstrual cycle. In general, periods occur once a month and last from 3 to 8 days.
A regular menstrual cycle can last between 25 and 35 days and begins on the first day of menstruation. Higher cycles at 33 days or less than 25 days may indicate hormonal problems. However, it is normal to have irregular cycles in the first 2 years later. menarquia, which is the woman’s first term.