Can I get pregnant the first time I have sex?

It is possible to get pregnant the first time you have sex if you do not use birth control (condoms, diaphragms, IUD, etc.) and you are in the ovulating window of your menstrual cycle. Pregnancy can happen any time male ejaculate, or sperm, gets into the vagina or vulva. This is why it is super important to use birth control every time you have sex if you do not want to get pregnant.