help?!!

i’m extremely stressed and anxious because my boyfriend put his tip in me (12 of jan) without a condom (both virgins at the time) and then quickly took it out because we knew it was wrong not having protection. this was also two days before i was suppose to get my period, which i’m suppose to be on now. but i’m 8 days late, but my periods are irregular (the latest my cycle day has been is 36 but right now it is at 38). also we had protected sex today and 2 days ago. could this mean i could be pregnant or could i just be paranoid???