Having intercourse without ejaculation can also lead to pregnancy. It is called external ejaculation, and external ejaculation is an unsafe method of birth control. During sex, a small amount of sperm will enter the vagina, and as long as there is a healthy sperm, pregnancy may occur, so it is not safe to use this method of contraception. If you don’t want to have children, you can use condoms or place a contraceptive ring or take short-acting oral contraceptive pills, which are very effective. If these contraceptive measures are done properly, the success rate of contraception can reach more than 99%, that is, generally will not be pregnant, but in the application of condoms to prevent pregnancy, before and after sex must check whether the condom is broken.