period late???

Dharma

hi I recently became sexually active (like... 2 weeks ago) anyways, my period is late by a few days and I'm not worried I'm pregnant at all, but did anybody else's cycle change once they started having sex?? my friends say it does but I can't find anything on Google about it. I've got all my regular symptoms and whatnot, so I know it's coming. it's just weird it's late. thanks in advance!