I am really sorry man that is awful! I understand that for relatively short periods of time we can feel numb or nothing especially when we have a task that has to be done, I assume you will "feel" again probably sooner than later. Someone once told me this and I find it to be true. "The grief we suffer from losing a loved one is like there is a pain/sadness/hopelessness button on the ceiling of a small room with a large ball that completely fills the room at first constantly pressing on the hurt button as time goes by the ball very slowly deflates but is still bouncing around that small room at first as it is slowly deflated we feel short periods of time without that hurt button being pressed by the ball, as time goes on the ball very very slowly gets smaller and smaller hitting the button less often. It never goes away but as years go by the ball gets smaller and small and the hurt button gets hit less and less often." I probably butcherd that a bit but hopefully the idea makes sense. Not that this is what you are going through right now though it is way to soon I think the not feeling for short periods of time right now is just a survival response. Take care of yourself and I speak from my experience that it will get easier but your in the shit right now. I feel for you but it will get better.