The first thing to look at is how many days your period is clean. For example, if it takes seven days for your period to clear, and then you have intercourse on the sixth day after your period clears, and you ejaculate internally, you will definitely have a chance of pregnancy, because if you have intercourse at a time other than your period, you will have a chance of pregnancy whether you are ovulating or not, because when you have intercourse during the safe period and ejaculate internally, the stimulation of sexual excitement may cause abnormal ovulation, so you will have a chance of pregnancy. If you have already had intercourse and ejaculated, it is recommended that you take the emergency contraceptive pill immediately within 72 hours of intercourse to prevent pregnancy. Emergency contraceptive pills can be taken Jin Yuting such drugs for contraception, it is recommended not to eat anything two hours before and two hours after taking the pill, so as not to eat food and then take the pill to cause vomiting.