If you have intercourse during ovulation and ejaculate outside the body, there is a chance of pregnancy. Because ejaculation is clinically possible, but the chance of conception may be low, because it is during ovulation, which increases the chance of conception, it is recommended to take oral emergency contraceptive pills. As long as the emergency contraceptive pill is taken within 72 hours after intercourse, it will have the effect of contraception. At the same time, the emergency contraceptive pill should be taken on an empty stomach or two hours after a meal. It is forbidden to eat any food, including water, within two hours after taking the pill. After two hours, you can drink more boiled water to speed up the metabolism of the pill, so as not to cause any adverse reactions. At the same time, the emergency contraceptive pill is not 100% contraceptive, as long as about 12 days after intercourse, you can go to the pharmacy to buy early pregnancy test paper to rule out the possibility of conception.