The day after my period ended, my boyfriend and i had sex with a condom, but it broke. i was wondering if i could get pregnant from the precum?

Probably not, but...: Since the timing of ovulation and the viable duration of eggs and sperms may vary, no one can say for sure yes or no. So, practice safe sex as keen, diligent, and responsible as possible for more joy and less worry. But what described is very unfriendly and unlikely for sperm to be alive enough to fertilize egg. Best wish...