Antibiotics and the Pill

Hey y’all, so I’m not wondering because I already had unprotected sex and I think I might be pregnant. I never have unprotected sex, I’m on the pill and he always wears a condom. I’ve just been reading up on antibiotics so I know while I’m taking them what to do and what to avoid. But I’m confused. I’ve been getting conflicting information. How long after taking antibiotics should I wait before having sex? I’m a naturally worrisome and I don’t want to not wait long enough then freak about possibly having a birth control failure. (I worry about everything).

Update: I’m aware you can get pregnant. That’s why the question is how long should I wait? Not whether or not I could get pregnant because of the antibiotics.