You can wash your hair when you first get your period, but be careful that the water temperature is not too cold. After washing your hair, use a blow dryer to dry it in time or wrap it in a dry towel to avoid getting cold or winded. Because the resistance to menstruation decreases, the symptoms of a cold can easily appear. During the menstrual period, you need to pay attention to rest, avoid strain, mainly to develop good habits, do not stay up late, must pay attention to the menstrual hygiene, diligent change of underwear, diligent cleaning of the vulva. The menstrual period is definitely forbidden to have sexual intercourse as well as a tub bath, because the opening of the uterus is easy to cause retrograde infection, infection can easily cause endometrial inflammation, pelvic inflammatory disease, adnexitis and so on, which will cause certain harm to the female body.