I feel very much like that when I am depressed. Have you had a chance to talk to therapist? You sound like you have a LOT on your plate If I were in your shoes I think I would feel the same, but your have to believe that it will pass... usually not as fast as we'd like. You found a good site though. People here so understand, and want to, so let us know what's happening.
You'll make it. Just hang in there