Why did my period just stop?

ok I started having my period on 1/9/08 {thats when I started} and I went on all month then stoped,I had one all feb.I had one 3 weeks in march april I didnt have one.may I had for one week june none,july none,aug none, and sept none, I don't get it what happened did they just stop or something and iam NOT! sexually active

See a doctor. It sounds like you have an irregular period. Since you say you are not having sex, that's what I would assume. I would get checked out to make sure nothing is wrong.
If it is just irregular, he can put you on birthcontrol so you can have normal periods again.

When ladies first get their periods its supposed to be irregular. Your period will slowly start to regulate when your body is used to it. Right now its normal for it to be irregular. You should know this already, haven't they taught you that in school?

yes they thought me this in school but I wante to double check please and thank you!!! :D

For one it's not very normal to have periods all month...Two you just might be irregular...but either ask your mom or go see a doctor

ihave the same problem. ifinally told my mom about it yesterday and luckily ihave a regular doctor's appointment soon, so we're gunna ask the doctor to check me out. if you want to know what the doctor tells me, then just funmail me [: