2nd accident. Idk if I should take a plan b 🤦🏻‍♀️

First off, im not on birth control but after this many accidents, I’m seriously considering getting on it. Last weekend (Saturday), my bf and I had sex with a different condom brand. It ripped so I took a plan B on Sunday. We continued having sex normally and then right now, we had sex again & The condom ripped AGAIN. If I were on my normal cycle (one not thrown off by the pill), my period would be in 3 days but obviously the pill threw it off so idek what cycle day I’m on or if you ovulate after the pill. Should I get another plan b? I’m worried 😟

Also, he said he wasn’t close to cumming yet but I know there’s always precum 🤦🏻‍♀️🤦🏻‍♀️