Miscarriage and sadness

I found out I was miscarrying on Christmas Day, and had a D & C on 12/29. I am only a week from the day we found out, but having such a tough time with routine things. I feel like how can I just go on with normal activities when my life was not supposed to be this way now. I have such short patience with everyone and everything and I hate talking to anyone about normal things. Hearing other people laugh is killing me because there is no joy in my house right now. Just looking for some support....