It should not be a big problem to have intercourse when your period is almost gone. However, it is better to have intercourse 2-3 days after menstruation. The reason is that having intercourse just after the menstrual period, which is not yet completely clean, can easily cause upstream infection of vaginal inflammation. The cervical opening is not completely closed when you have just had your period. If you don’t take good care of your hygiene, the chances of having an infection are higher. If the menstrual period is not completely clean, intercourse may also cause reflux of menstrual blood, resulting in endometriosis and painful menstruation. For couples who have just had their period, it is important to cleanse and wash the vulva before intercourse, and to do so gently. Because the vaginal mucosa is relatively thin after menstruation, mucosal abrasions can easily occur and cause infections.