It is possible to get pregnant without ejaculation. As long as a small amount of sperm is present in the woman’s vagina, it may swim to the abdomen of the fallopian tube, and if it happens to catch the woman ovulating and meet the egg to form a fertilized egg, the woman will become pregnant. Therefore, if there is no ejaculation inside and the patient experiences delayed menstruation, it is recommended to go to the hospital as soon as possible to have a blood test for the blood HCG level. If the blood HCG level rises it indicates pregnancy, if the blood HCG level does not rise then there is no pregnancy. Contraception by external ejaculation is a very unsafe form of contraception. If you do not want to have children, you can use contraceptives such as condoms, oral contraceptives, and IUDs for women.