Shauna, I am SO sorry.
I will confess, if the roles were reversed, I couldn't have possibly been understanding enough for my wife. Just because I didn't know. I didn't get it. Before it happened to me. I would have tried, just don't think I would have been quite good enough.
Is there group grief counseling somewhere in your town? Do you have access to individual counseling through insurance...maybe if you go, and get him to go, maybe he'll witness your pain in that setting and get it?
Either way, know we are here to support you. I too feel alone at times... we lost our mothers...I think it must just be the way folks feel at times like this.