Made a mistake any thoughts

I know this is stupid but I’ve never done this before and I feel so stupid. I’m supposed to get my period and my periods are irregular my bf and I were drunk and had sex and he came in me sunday and I figured since my ovulation window is closed why not and he actually did it , it’s been five days since and I’m scared I messed up and my ovulation didn’t end and that’s why it’s not coming, I feel cramps and how I would feel if my period was coming thoigh like those pains right before it comes which is the only reason why I did it but it won’t come down , I also didn’t take plan b like an idiot , any thoughts on if I can get pregnant ? I am going to wait till Sunday to take a pregnancy test