TOO MANY VITAMINS = NO PERIOD?!! HELP! 😱

Nissa
I've been taking a multivitamin and a prenatals. The side affects have been nausea, diarrhea and fatigue. My period is 5 days late, it hasn't started yet. I'm going to stop taking the multivitamin, because of the horrible side effects from taking too many vitamins. My question is, have the vitamins prevented my period from starting?!! I took a pregnancy test and it's negative. HELP!Β