It is normal to have your period for 2-3 days. The normal duration of menstruation is 2-7 days. It is more normal to have a period of 2-3 days, and you need to pay attention to the volume of menstruation. If the menstrual volume is very low, you need to be alert to the occurrence of reproductive system diseases or endocrine system disorders, which can lead to a short duration of menstruation and a decrease in menstrual volume. Menstruation is cyclical and the volume of menstruation is within the normal range of 30-50 ml, with great individual differences. The duration of menstruation is related to the level of hormones in the body and to the time of shedding of the endometrium. During menstruation, diet and hygiene play a big role. You should have a reasonable diet and change sanitary napkins and underwear in time, mainly to avoid infection.