Thanks for the replies.
I am 17- and 5'6". I haven't had a period in 6 months.

My parents have taken me to the doctor because they say I am so thin. He did blood tests- and they found nothing. He asked me about the possibility of an eating dissorder, and I denied it. Later that day I went to the denist. I had no idea, but my parents asked him to check for bulima stains on my teeth. I don't have any. My mom asks- and I deny it. My mom and my principle talked. I have to go to her office to eat a small snack before and after lunch- but she is so busy, she is often not in her office- so I will just sit outside her office and then go back to class. If she isn't there, I wont eat.

I know I need to go tell someone, and just "come out"- even if it isn't my parents. But I am scared.
I am so tired. Just tired of life, tired of constantly worrying about my image.

I am sorry if this is more than anyone wanted to hear. It just feels so good to let it all out.