Tonsillitis..Antibiotics & Birth control (pill)

Soooo just curious .. has anyone gotten pregnant while on antibiotics? I had tonsillitis last weekend and my doctor put me on amoxicillin (6/22) my period came on as normal (6/24) I always heard that antibiotics make your birth control ineffective so I was curious if anyone had any real life experiences with that ? I’m on it for 10 days!