I'm feeling empty inside?

I can't tell whether it's depression or just teenage hormones. For the past two nights I've cried myself to sleep. For the last couple of weeks, I've felt down. Everyone in my house is always so sad, so maybe that's affected me in some way. I have no one to talk to about. When I say no one, I truly mean no one. I've prayed to God to help me, but I feel like He's given up on me. In this moment, I can tell you honestly that I wouldn't care if I died right now. I would never do anything as stupid as kill myself; I've got too many things I want to do in life, but I know this is dangerous state of mind to have. Every time I cry myself to sleep, I keep expecting so miraculous breakthrough, as if all the answers to my problems will suddenly appear. I guess my question is whether or not you think I'm depressed. When I say feel empty, I mean I don't feel anything. I'm crying, but it's not reaching my heart, it's all in vain. Nothing's working. It's like my life is no longer in my control. Sorry this is pretty long.