I really appreciate you saying so, but I don't think that's necessarily true. Sometimes people just don't get better from things.
Well yes, but just look at those who do. VW is my shining example of a person who has struggled through unspeakable trauma and lived to fight another day. I believe you can too, truly.
The Prozac may not be the best antidepressant for you; definitely call your doctor--I don't know if I would wait until tomorrow. You may want to try another class of drugs, like Wellbutrin or Pristiq (my current wonder drug). It could be that the Prozac hasn't kicked in yet, though. At the lowest dose (and even at a higher one), it often isn't effective at all until you get up to the higher dose for at least a month.
I will say, though, that I started to feel better within a couple of weeks on the drugs that have worked the best for me.
ETA: And please, yes, listen to all the smart people here who love you and have good advice and words of comfort. And PLEASE call immediately if you are suicidal.