Pregnancy does not necessarily follow from having intercourse without contraception. The prerequisite for pregnancy is the meeting of sperm and egg to form a fertilized egg, and women only ovulate once during a menstrual cycle, and ovulation is relatively fixed. For women with regular menstrual cycles, it is about 14 days before the next menstrual period. Generally speaking, the egg can survive in the body for 24 hours after it is expelled, while the sperm can survive in the woman’s body for about 72 hours, so the chance of conceiving during intercourse around the time of ovulation is very high, while avoiding intercourse during this time may not necessarily result in pregnancy. However, ovulation is affected by many factors, such as environmental changes, mood swings, etc., which may lead to early or delayed ovulation, so there is a possibility of conception when having intercourse during non-ovulatory periods, so it is recommended that if you do not plan to get pregnant, you should take effective contraceptive measures during intercourse, such as condoms, short-acting pills, etc. If you do not take safety measures during intercourse, you can consider taking oral emergency contraceptive pills. Although the side effects are relatively large, but for contraception is also feasible.