The probability of getting pregnant by ejaculation outside the body is about 27%, not 100%, because although the ejaculation is outside the body, but it is generally difficult for men to control and grasp more accurately, it is possible that some sperm will be missed in advance, so there is still a probability of pregnancy. If you don’t want to have children, it is recommended to use condoms or short-acting oral contraceptives or intrauterine devices to prevent pregnancy. If you are ovulating, the probability of in vitro fertilization is relatively high, so it is recommended to take oral emergency contraceptive pills as soon as possible within 72 hours to remedy the situation, and use a test paper, pregnancy test or come to the hospital for a blood test for HCG more than 12 days after intercourse to rule out unwanted pregnancy.