I NEED HELP

on sat, i had sex with my boyfriend for the first time buttttttt , we were going fast and his dick slipped out of the condom because of the precum but the tip of the condom stayed inside of me and there were no holes in the condom and he didn’t even cum it was all precum , and im on my period right now . is it to early to tell if i will get pregnant ? or i’m i not ? it was on saturday around 11 and i bought a plan b but i haven’t taken it yet and idk if i should . today at 11 turned 48 hrs so i have till tmr at 11 ? pls let me know IM SUPER PARANOID !!!