ve lost a friend and companion, whether that
friend is human or dog. You
will feel very very sad
. And go over all the things you
did wrong, or think you should have done, etc.
But let yourself grieve. It's natural. You're right, to take a few days to let out the pain and grief, and be on your own, or do whatever you need to do. Maybe you could make his grave beautiful with crystals or flowers, or carve a headstone for him...