Plan b

My boyfriend and I had sex and we’re using a condom. The condom didn’t break and he pulled out before he finished but the condom came off and was still inside of me pretty far ( legit have never had this happen). He didn’t cum in me because I saw all of it. But we took plan b anyways just to be careful and Incase of Anything that was in the condom. I took it about an hour after we had sex so I took it in time... I’m just wondering when I should expect my period Ik that it varies depending on the person but I just wanna make sure that I’m not pregnant because it was 2 days after I was supposed to ovulate.( my period is irregular so I never really know when I ovulate)