I am 16, and this weekend just passed my stress levels went through the roof because of all of my school work piling up. And I know it's silly but my period is always regular and on time, but at the moment I am a day late and there are no signs of my period coming. No cramps, no bloating, no symptoms I usually get before my period. I'm curious as to whether or not maybe the stress I have been experiencing could be irregulating my period? I am sexually active, no sexual intercourse though so I know I can't be pregnant, plus I am on the pill.