Okay my bf and I have protected sex and he never comes in me. I haven't had an actual period since August 28 (when I moved in to college) a few days ago I had PMS symptoms but only had brown discharge and one instance of blood. The whole thing only lasted 3 days and my periods usually last 5. Ive been super stressed since school started and when I'm stressed i get even more irregular but, should I be worried ?