No period for 2 months..

Jasmin

The last time I had my period was about 2 months ago.... September 20? My period did not come during October and did not come until this day either. I am trying to avoid pregnancy. However, my boyfriend and I haven’t been sexually active for those 2 months. I’ve been working alot too. Should I be worried? I honestly think its because I’ve gain weight and I’m really stressed. Any thoughts on why I havent gotten my period yet?