The likelihood of pregnancy depends on when the condom is worn. If a condom is used throughout sex, then pregnancy is unlikely because as long as the condom does not break, then the semen does not enter the vagina and you will not get pregnant. However, if you don’t wear a condom at the beginning, but only put it on when you are about to ejaculate, then you may get pregnant, because before ejaculation, you will secrete prostate fluid, which contains sperms, and if this prostate fluid enters into the vagina, then you may get pregnant. Therefore, it is recommended that if you use a condom to prevent pregnancy in your daily life, you must use a condom during the whole sexual intercourse to be safe. If you are not planning to get pregnant and do not want to get pregnant for a few years, you can use an intrauterine device (IUD) to prevent pregnancy.