You can’t get pregnant by having intercourse during menstruation. Menstruation is not the time of ovulation, and such behavior is not advocated. Menstruation is the time when the endometrium is shed and bleeding. After the endometrium is shed, there will be local trauma, and intercourse at this time will increase the chance of contracting endometritis. The vaginal mucosa and cervical mucosa are congested during menstruation, so intercourse at this time may also lead to vaginitis and cervicitis. If you don’t want to have children, you should take safe and reliable contraceptive measures, such as condoms and short-acting pills for short-term contraception, and intrauterine devices for long-term contraception. If you have fertility requirements, you can arrange intercourse on alternate days in the middle of your period, when you are ovulating to increase the chances of conception. If you have normal intercourse without contraception and have not conceived within 1 year, it is recommended to consult a doctor to improve the relevant auxiliary examinations and identify the specific causes for the right treatment.