My period is couple days late. i haven't had sex since 07/04/16. i've gotten my periods since then. what does it mean? kinda paranoid. irregular???

Irregular periods?: If you truly have not had intercourse since 7/4/16 then you should have no fears whatsoever that you might be pregnant. There is only one case report in history of an immaculate conception and that one is over 2000 years old and is truly a matter of faith. Your instance, if true, would be case number two in over 2000 years. There are simple HPT's for that which hopefully will reassure you.