Just asking

my period isn’t due for 7 days but I saw my bf last week and that was supposed to be my fertile week but I never know because of my periods being irregular...anyway I’m still a virgin but we’ve done oral stuff. Last week I gave him a blow job and after he ate me out and didn’t really finger me but had his fingers around that area while eating me out. Is there any possible way I could get pregnant. I’m super extremely paranoid about this and it’s stressing me out. I’ve had a headache for the past 4 days and I have no symptoms that my period is coming and I’m just paranoid 😂