helpp

so my period is late by 5 days but there's no way im pregnant because i've had my period twice since the last time i had sex. plus the last time i had sex i was on birth control and we used a condom. i stopped taking birth control i want to say a month or so ago. idk why im late its kinda scaring me even though i know i can't be pregnant... im never late. has this happened to anyone? anyone know why?