Feeling left out

The way I raised, what happens at home stays at home and the same with school. I was never asked how was school and never talked about home at school. Both places I felt alone. Now I'm grown and have problems connecting with people. Its hard going through college with no one and it's at the point where I'm angry because once I walk out my room I act and look as if I'm okay. I don't know who I am at this point.