Wikipedia wrote:
Schizoid personality disorder (SPD) is a personality disorder characterized by a lack of interest in social relationships, a tendency towards a solitary lifestyle, secretiveness, and emotional coldness.[1] There is increased prevalence of the disorder in families with schizophrenia. SPD is not the same as schizophrenia, although they share some similar characteristics such as detachment or blunted affect.
You could have had this as a child, seeing as people in families with a prevalence of schizophrenia (which is similar to schizoaffective disorder) are more likely to develop it.
I definitely know, I had schizoid's as a child, I have AS, and I developed schizoaffective disorder later on. ^-^