Irregular periods?

April
Am I the only one who gets irregular periods? I'm 14 and I got my period last August, so it may be because I'm still in the first year. But in the beginning it was very exact and then started getting messed up. I've had a really heavy period once, I've had extra periods and skipped periods. I also tend to get periods even 2 weeks before they're due. They always seem to come really early, and last more than 10 days too. Any suggestions, advice, or people who deal with this too?