A woman has her period for a few days.

A woman's period is a few days away, that is, the menstrual period, the number of days the menstrual period lasts, generally the menstrual period lasts 2 to 7 days, if less than two days is too short, if more than seven days, the menstrual period is prolonged. Normal menstrual flow is between 5 and 80 ml, probably able to wet 1 to 15 sanitary napkins, if a sanitary napkin can not be wet for menstrual flow too little, that is, menstrual flow less than 5 ml, if the menstrual flow is greater than 80 ml is called menorrhagia. Normal menstrual cycle is about 28 to 30 days, early or delayed a week will be normal, menstrual cycle has a certain regularity, if less than 21 days for menstrual frequency, more than 35 days for menstrual thinning.