So depression suddenly dropped on me last Friday, out of nowhere. It is now 8 days later and I'm starting to think it's never going to go. I'm taking 40mg prozac, not drinking, can't eat or sleep. My main fear is that it is untreatable. Please tell me this isn't going to last months because I'm already done. I just want to cry and scream cos nothing is helping it and im neglecting my loved ones cos I can't function. Never had depression before (maybe for a few hours at most) but not constantly for over a week. 
Any suggestions, tips, anything please.