Antibiotics and birth control

I saw online a whole bunch of articles saying that antibiotics don’t actually affect birth control. I feel like that is not the case at all. I was having completely regular (for me) periods while on the pill until I was given an oral antibiotic for strep. The next day after taking just one pill I started a horribly painful period in the middle of my cycle. This was completely abnormal for me. Has anyone else had any similar experiences or the opposite?