Yes agreed with Remar. I would see a dr. and get bloodwork a check up. I have been here and done this to though and agree again with her...these are definitely signs of depression and anxiety. I'd sleep and take it easy and no matter what I was tired. This lasted for a good period of time to. Any more i'm not so much tired but just feel like i'm to overwhelmed and not mentally or physically up to much of anything or unable to focus. So yes get bloodwork done and see about getting an evaluation to see if you have depression or anxiety then get on some anti depressants and if the anxiety is too much some anti anxiety meds.
Have you seen a Dr yet? If you have'nt, I would recommend doing so. You are having some anxiety and depression symptoms, but it's hard to say for sure if this is what's going on or if it's something else. Only a Dr can diagnose you. Are you having any other symptoms?