Do I have a phobia?

Hello there guys I just want to know if I have a phobia because since I was a kid, maybe in my grade school days, I have an experienced of being embarrassed.I think because of that I lost my confidence or believing in myself. Another one is one time I saw some people stares and then they laugh at me. I don't know why. I think that is also another reason why I have a problem socializing with other people. I want to cure this stuff and i don't know if this is a phobia or not.. please help me..