I bet that'd be scary!
Give yourself time to mourn, though. He sounds like he was a pretty special dog to you. Cry about your loss, reflect on it all, and mourn.
If you are looking to get another dog to fill the void, wait to do that until you have honestly moved on and done all those things listed above. Getting another dog while you are sad that you lost a beloved pet can seem like the natural thing to do but can lead to a lot of problems down the road with the new dog as far as training. Buying a new dog while you are emotionally unstable tells the new dog you yourself are not stable and can not be a good pack leader.
I know you never mentioned getting another dog but I just wanted to toss this around for you in case it crossed your mind. :) So wait until you are in good spirits again.
Opportunity is missed by most people because it is dressed in overalls and looks like work. ~Thomas Edison