The chance of conception during menstruation is 1 in 10,000 or 1 in 1,000, because during menstruation a woman cannot produce eggs and cannot combine with sperm normally to form a fertilized egg, so the chance of pregnancy is low. Avoid sexual intercourse during menstruation to prevent upstream infection, which can easily cause vaginal inflammation, pay attention to vaginal hygiene during menstruation, change sanitary napkins in time to avoid the long-term accumulation of blood to stimulate the vulva and vagina, and pay attention to rest during menstruation to avoid overexertion. If you want to conceive, it is recommended that you choose another time to conceive, as conception during ovulation will give you a better chance of pregnancy.