HELP!!!

Ok so I had unprotected sex the other night and I'm not sure where he came and I was in my fertile window at that time (I'm pretty sure I was ovulating) and I went and got plan b and took it the day after as soon as I could but I'm still EXTREMELY nervous that I am going to be pregnant. I don't have my period for another 2 weeks so I have to wait, but I am freaking out. ANY advice at all would be appreciated, thank you