I am so sorry to hear about your loss. I would be devastated too. Your loss is very fresh and I think your reactions have been pretty normal. I wouldn't want to do much either. Mourning is a personal thing. Everyone mourns at some point in your life, but when you go through it you feel so alone. its important to remember that you are NOT alone!!
Its also important to allow yourself the time to absorb what has happened and experience the normal emotions of mourning so that you may go on with life. When my father passed I was only 24, I never thought I would lose my daddy. I was miserable - especially since I was a young single mother and he was a huge source of my emotional and financial support. One day I was speaking to a stranger at the gym. She knew nothing about my loss, but somehow we got on the topic of emotions. She said "You know. If you lose a loved one its normal to feel sad, angry, to cry and throw a fit. When we run into problems is when we don't or won't allow ourselves to feel those things because we think we're weak if we do. We should let them wash over us like a wave so that they can pass." Without knowing it she gave me the best advice I've ever received and it helped me through that very difficult time. If you fight the waves you drown. You have to let them come, experience them and then, most importantly, let them pass.
There may be a group that meets in your area for people who's spouses have passed. It might help to be around people who are feeling similar to you right now.