What Causes Missing Periods, Back Pain And Sensitive Nipples?

me period come at end of month. and i had one last month- im still waiting on this one. but i have ben really nauseous threw the day specially before i eat in the morning. lower stomach weirdness and back pains! My nipples are kinda sensative. Kinda tired alot. I REALLY HOPE ITS STRESS! PLEASE SAYITS STRESS