There is a chance of pregnancy when the patient ejaculates internally during intercourse. The chances of pregnancy are mainly related to the time period when the patient has intercourse. If the patient has intercourse during ovulation, especially on the day of ovulation, the patient’s chances of pregnancy are very high. If the patient has intercourse during the safe period, the patient’s chances of pregnancy are very low. If the patient does not intend to become pregnant, the patient is advised to take active contraceptive measures, which can be oral emergency contraceptive pills. In the case of emergency contraceptive pills with progestin and estrogen components, it is required to be taken within 72 hours after intercourse. If it is an emergency contraceptive pill with mifepristone component, the patient can take it within 120 hours of intercourse; if the patient chooses to use birth control, the IUD for emergency contraception, the patient is required to place the IUD in the uterine cavity within 120 hours of intercourse.