If you have intercourse the day after your period without proper contraception, you may get pregnant, but the probability is not high. If a woman has regular periods, ovulation usually occurs about 14 days before the next period, and the day after the period is a safe period, basically not pregnant. However, some women have irregular menstruation, it is difficult to determine the ovulation period, so the day after menstruation intercourse if you do not do a good job of contraception, there is a possibility of pregnancy, and women ovulation will also be affected by personal emotions, habits and the environment, there may be a phenomenon of early or delayed ovulation, so the day after menstruation if you do not do a good job of contraception, you may also be pregnant. If a woman does not intend to get pregnant, no matter when she has intercourse, she should take proper contraceptive measures to avoid unwanted pregnancies that may cause harm to her body, and if she has any symptoms of physical discomfort, she should go to the hospital in a timely manner and consult a physician for guidance.