Drunken Sex

So two nights ago I got reallyy drunk and ended up having sex without protection. I said I wanted condoms and he said he could pull out and drunk me is pretty much okay with anything. I'm 17 and I'm supposed to be starting my period like today but I've always kinda had an irregular period so I'm not too worried. Could I get pregnant even if I didn't have sex in my fertility window on this app??