Antibiotics and BC

RNG🐢🌻🌻🌻 • 11/20/2016 💏 dog mom 🐶 DA 🦷 gamer 🕹
So we've all heard that antibiotics make BC ineffective. I was wondering is it just some or is it all antibiotics? And how long does it last? I'm kind of freaking myself out. The last time I had sex was Sunday, I've been on antibiotics since Monday night and my period started Monday as well. I'm on the nexplanon. I'm sure I'm good, but I just want to be sure.