What happen?

I've been through a lot, I don't know if i have suffered depression. They all say that's it just stress and it will go away, but my symptoms are different. I would like to stay in my bed and just lie there, i don't even want to go out or enjoy the sun, I just want to be alone. I feel that im sooo alone, and always sorry for myself. I often cry at night when everyone is asleep. Insomia is always by my side. Do you think this is depression?