If you get pregnant with a condom, it is possible that you did not insist on using a condom, because at the beginning of sex, if you do not use a condom, there is a possibility that you may not perceive the leakage of semen, so you must insist on using a condom; it is also possible that the quality of the condom is not good and leakage occurs; or after sex, you do not take out the condom in time, and after the sexual organ is soft and shrunken, the semen inside may After the sexual organ softens, the semen inside may overflow through the mouth of the condom, thus leading to the failure of contraception. So must adhere to the correct use of condoms, it is recommended that before each sexual act, a new gel condom must be used, put on after erection; carefully tear open the individually sealed bag, avoid using sharp objects, which may lead to breakage; pinch the front end of the condom with your fingers, squeeze out the air inside the small chamber, and then put it on the erect phallus; ensure that the condom covers the entire phallus only, before the completion of sexual intercourse and no soft contraction, leave the female partner.