Are you obsessing about it (OCD)?
A million or more American men suffer from body dysmorphic disorder (BDD) (Phillips and Diaz, 1997; Phillips et al., 1993). Boys and men with BDD become obsessed that one or more parts of their bodies are ugly or deformed, even though they look perfectly normal. In a study of 95 men with BDD, we found that most were obsessed with their hair, skin and facial features, although any body part could be the focus of concern (Phillips and Diaz, 1997).
It is very commonly associated with Muscle dysmorphia, another subtype of body dysmorphic disorder, which in itself is a variant of obsessive-compulsive disorder. Sometimes called bigorexia, muscle dysmorphia is the opposite of anorexia nervosa. People with this disorder obsess about being small and undeveloped. They worry that they are too little and too frail. Even if they have good muscle mass, they believe their muscles are inadequate.
However, from what you describe I don't think you really obsess too much about it, i.e., it's not full-blown OCD. And if it's not, why worry about it?
Most people, for example, hate hearing their own recorded voice. That is a consequence our (as a species) almost unique (among animals) self-concisouness, and the fact that listening to our own voice triggers a feedback mechanism in our brains that is perceived as a feeling of unplesantness.