Am I pregnant HELP!!

Hey everyone, last Thursday my man and I were having sex and the condom broke and he came in me, we were both panicking and since I wasn’t on birth control we drove to the store and got a plan B. The week leading up to the Thursday I had my period. I noticed that 2 days ago I started bleeding again and since I just finished my period I was nervous that it was implantation bleeding. But the flow of it was very heavy like it was my period, but I’m not sure because it only lasted 2 days. I read that plan B can cause you to start you period early but i don’t know. I’m scared and I need some advice on what y’all think of this. Please help, thank you