It is possible to have intercourse with a woman who is approaching her period, but not if there is already a small amount of menstrual blood. The onset of menstruation usually means that the woman is in the luteal phase, so it is possible to have intercourse, usually without special discomfort, but it should be noted that if there is no desire to have children, it is recommended that safety measures be taken to protect the woman before sexual intercourse, regardless of the period. If there has been a small amount of menstrual blood, you should avoid sexual intercourse, because at this time the female immune system is low, and there is menstrual blood, this time coitus is very easy to cause infection, resulting in unnecessary diseases. If a woman has premenstrual or menstrual symptoms, she should go to the hospital as soon as possible to see a doctor and identify the cause of the disease.