I was drunk and said I was on the pill..

I was being such a dumbass when I was drunk and decided to go see my FWB like I always do? He's a great guy and we like each other but just not time for a relationship but our communication is great so no problems!! Or so I thought.. Three days when he weirdly didn't pull out I was shocked. I was like "What the hell?! Did you really just finish in me?!" He said "Well yeah? I did like 5 times last time too cause you said you were on the pill?" I do not remember saying any such thing.. So that makes 5 times of sex and him just letting his little guys all up in my body. 😒😒😒😒😒😒 Now I'm just waiting on my period to show up. I should try no to stress right? Idk what to think. Since he did this all around my fertility window.