Semen ejaculated outside of the vagina is theoretically not pregnant. The meeting of male sperm with the follicles discharged by the woman to form a fertilized egg is a prerequisite for pregnancy. If you ejaculate inside the vagina during intercourse, the sperm in the male semen enters the woman’s vagina and eventually only a very few extremely vigorous sperm can reach the fallopian tube area and meet the egg to form a fertilized egg. If you do not ejaculate in the vagina during intercourse, the sperm in the semen cannot leave the seminal plasma and enter the vagina, so they cannot meet the egg and form a fertilized egg, and naturally, you cannot get pregnant properly. However, contraception by external ejaculation is not a safe and effective form of contraception and should be avoided because of the possibility of unwanted pregnancy.