Whether or not pregnancy can be achieved with extracorporeal ejaculation depends on the specific situation. If the patient does not have a substantial sex life, just the friction of sexual organs, and there is an extracorporeal ejaculation, this situation will not be pregnant. Because, it is impossible for the sperm to enter the vagina, which is closed in normal times, as long as the sperm is washed away. If the patient has a substantial sex life, just at the time of ejaculation, take the method of extracorporeal ejaculation birth control, this situation is not able to exclude the possibility of pregnancy. Because men before ejaculation, there will be prostate fluid out, which will contain sperm, although the amount of sperm is very small, but, there is also a chance of pregnancy. Therefore, if the patient is having intercourse during ovulation, it is recommended to take emergency contraceptive pills to reduce the chances of pregnancy. As long as it is taken within 72 hours of intercourse, it can reduce the chance of pregnancy by 80%.