1st Time: Condoms

An • 18.
I've been waiting to have sex with my bf because I'm honestly terrified by the thougth of getting pregnant. My family is very religious (im not), so sex is not a very good topic (and that sort of accident isnt either). I just really want to know how effective using a condom is, has any of you gotten pregnant even tho you used it? I know it sounds super silly, but I really want to feel confident.