Why don't you try an AA meeting? Everyone goes through a lot when they get sober. Having others around who understand and who will take time to get to know you is really helpful.
I think drinking to mask discomfort with life and emotions is pretty common. Give it some time, a week is really early on. I didn't really feel like myself for about the first three months. You may find that the depression lifts a lot with time. I know mine did.