Moving is not the entire solution. Your husband, has a secure job, friends, a career by moving you are up-rooting all that he has worked for.
Moving, away from memories is not possible, you are "running away" from them but they will still be there.
You need to bury the past and get into the present, start hobbies and make new friends.. People die all around us, all the time.. Sometimes they all come from one family, in different circumstances but we move on or else, we stay in the same spot.
Your husband needs you right? He has been living in the same "spot" with you, you have him and it's selfish not to get out of this bubble, I thought you would be stronger than that, fight for it, you have him.