I've been there, before. I know how it feels. My friends would make fun of me for having such tiny lunches (I would eat about half a sandwich), but they had no idea what I was going through.
IGNORE the people who make fun of you and tell you that you're stupid. The truth is, if you really do have anorexia, you are sick. You can't help it. I really think that you should tell someone about this, if nobody knows yet. Anorexia causes a lot of problems with your body later on in life. It ruins your metabolism and a bunch of other things. Definitely let somebody know. I know its easier said than done, though.
So to answer your question, YES there is something wrong with you. But you are NOT stupid, you are just ill. And its not your fault.
I used to starve myself because I was depressed, and I felt like my life was going out of control. Limiting the amount I ate gave me a sense of control. I also really wanted to be thin, I felt maybe I'd be happier if I were skinnier, even though I was already underweight. This was all just this past December.
But I am SO happy that my parents found out about this and got me help. You need to get help, too. Believe me, you'll be much happier once your healthy again.
Sorry this is so long.
