I don't know what you went through in your life, but I believe it's more of a self-esteem issue. I know that very well: if others have made you feel inferior, you will begin carrying these thoughts with you after a while. I myself was bullied and laughed at often times and it's just natural to suspect others to have negative opinions on you, as a result. I can really relate to what you're feeling right now. Every slightest reaction or "disreaction" can make you think: Omg, I'm so dumb and annoying. He/she probably thinks I'm a total retard now.