Missed period ... but not pregnant

So I Havent Had My Period In Two Months . Thing Is, I KNOW Im Not Pregnant Because I Havent Been Having Sex .

Anyone Know What The Problem Could Be ?

hormones, I would go see a doctor about it, or if you are still in school ask the school counselor. your body chemicals could just be off balance, and make your period irregular

u sound like me. my periods have always been irregular but it got so extreme THIS year, that throughout the april, may, june, and half of july months I didn't get my period !! it was awful. I knew I wasn't having sex either. but I didn't see a doc or anything. they started coming like normal after. so my advice to you is to wait and see.

your period couldf be irregular
if youve been stressed, not eating properly, have an eating disorder,are sick,over-exerscising or are underweight that could also affect it
you should see your doctor though

If you have lost a lot of weight recently or are underweight it can cause your menstruation to stop because your body can't support a baby. When I was anorexic as soon as I fell under 112 pounds I stopped getting my period. It was another 4 months till I started getting treatment and gaining weight again, as soon as I did I got my period back.

the same thing happened to me. my doctor said it happens a lot to girls especially teens so..dont worry it will come back. its probably just from a change in eating patterns like going back to school after a summer break and eating at diferent times and day. or getting more excersize (or less) than you used to.