Scared!!! BC help!!!!!

 So from Thursday to Saturday I had sex five times and because I started the pill two weeks ago today(Sunday) I thought it would be fine to not use a condom but I was just looking at my period chart and I realized I technically was supposed to ovulate on Thursday. Here's the other thing, on Thursday we did it twice and he never finished inside of me, but he didn't go to the bathroom before we went for a second round, and I've always heard that you should go to the bathroom before having sex because sperm might be in the precum. So basically, he has never finished inside of me, I've been on the pill for two weeks, but I'm still worried if I could be pregnant. Am I just being paronoid??? What should I do??