SOS HELP!!

zoe
So i just ended my first month of birth control, im on to the 3rd white pill to keep me on track. my boyfriend a couple weeks ago went in without a condom for literally not even a minute, we checked there was no precum or anything. so my month went on as normal but my period is 2 days late now? is this just because my body is adjusting to the new pills??? SOS plzzz help.