food and eating

[x_false___doubt]

I'm not really sure why but I hate to eat in front of people. Can anyone explain this to me? I hate it. I have so much trouble with it at school. I can't eat lunch unless I am like sitting somewhere where no one can see me. This mainly sucks because I usually follow my friends around and so I never eat and then I seem anorexic to myself. I assure you I'm not anorexic it's just I don't want to be seen eating. I always think that people are thinking things like:
"Oh my gosh she's so fat, she doesn't need to eat anything" or
"Wow she doesn't need to be eating that she should eat like a damn slald or something"
What is wrong with me? Can anyone help me? If you know something please comment and tell me. Thank you.