Sounds like you made a wise decision when you went to the hospital in December. They would not have kept you for 10 days, if they did not think that you were seriously in need of help. Maybe there should have been some outpatient followup after you left. Doesn't sound like that was the case, IDK?

If you feel you need to go back, then I think you should trust that gut feeling.

I'm sorry you feel so depressed.