Hi labracorn
Welcome to PC

I am so sorry for your loss. Even though neither one of you wants children, I know it is still very difficult to mourn the loss of an unborn child.
It sounds like your husband and you share a wonderful relationship generally. You seem to know he is not one to generally talk about things. Perhaps avoidance may be why and the type of home he was emotionally raised in.
When I had one of my miscarriages several years back, we had decided on no more children. My husband as well, was very distant and unwilling to talk. I just let time take its course, and eventually (many months later) we talked about it.
Wish you luck and take care!