I have to ask one more time

So I’ve been taking some antibiotics. The packaging doesn’t say anything about this kind affecting bc like others do. I have never missed a dose or time. I had sex the other night and we used a condom. It didn’t break or leak and my SO didn’t finish inside of me. Just to play it safe, should I take a plan b? If not, why is plan b bad to take on bc.

Would you take on if you had sex while on antibiotics?