I, too, wish I had some comforting or inspiring words to share, but, unsurprisingly, am lacking.
Depression runs rampant through my Mom's side of the family, including her, my sister, my Grandmother (may she rest in peace), and others. I've seen the impact it can make on people, and those surrounding them. Never, ever, am I feeling worse than when my Mom or my sister is in one of their more serious down cycles. All I want to do is help them, or help them help themselves, but, it's a seemingly impossible task. I lend my support, and my ear, and I hope they are able to ride it out and overcome. And, like your case, it always seems to strike at the most inopportune times.
I don't know why I'm rambling about them, I guess I'm trying to say that I have witnessed what this is like, and while I cannot relate to what it's like to go through, I have first hand knowledge of how frustrating it can be to the one who is suffering from it.
I hope you are doing better than you were upon entering the Hospital, I hope you are able to attend school this Spring and I hope that somehow this ails you less and less as the years go by.