Given the data you provided (lack of interest in social interaction, avoiding social interaction, preferring solitary activities over social ones, father has Clinical Depression, uncle had Paranoid Schizophrenia), it seems possible that you might be experiencing Paranoid Schizophrenia Disorder.
Paranoid Schizophrenia Disorder is a mental personality disorder characterized by a lack of interest in social interaction.
According to the ICD-10, schizoid personality disorder is characterized by at least three of the following criteria:
-Emotional coldness, detachment or reduced affection.
-Limited capacity to express either positive or negative emotions towards others.
-Consistent preference for solitary activities.
-Very few, if any, close friends or relationships, and a lack of desire for such.
-Indifference to either praise or criticism.
-Taking pleasure in few, if any, activities.
-Indifference to social norms and conventions.
-Preoccupation with fantasy and introspection.
-Lack of desire for sexual experiences with another person.
Paranoid Schizophrenia Disorder is not a condition that can be diagnosed over internet. Therefore, you are advised to visit a psychiatrist for a longer period of observation and evaluation. The treatment is likely to be a combination of antipsychotics and psychotherapy performed by the psychiatrist or psychotherapist.