please help

okay so i am 15 years old, i’ve been having my period since i was 11, and i recently had sex for the very first time on halloween. my periods are already very irregular, i have them every 2 months or so because my body’s just irregular. i had sex on halloween, and he wore a condom and even then he pulled out before he came. i don’t believe there was any bare contact that could’ve caused pregnancy but i’m still very very scared. like what if the condom had a hole or something. my only symptom is that my abdomen is hurting, like where my period cramps normally are. that’s the only thing. i’m gonna be taking a pregnancy test tomorrow and then another one maybe a week later or something i don’t really know. please if anyone has any advice or if it’s even possible for me to be pregnant if he pulled out with a condom, or when it would be best to take a test. please anyone and everyone reply