Would you have taken plan b?

Well I hooked up with this guy and of course before I knew it he got inside without a condom. Fast forward we have sex twice back to back and he pulled out. Also he went to try and pee between times. (Yes I know I should’ve stopped then but fuck I was horny) That was 3 days ago and I’m pretty sure I’m ovulating now as I’m in a lot of pain by my ovary. Currently cycle day 12 had sex day 9. Well I’m nervous and thinking if I made the right choice as to just wait and see if I actually get pregnant.