Deciding to TTC again was one of the scariest decisions I've ever made. Once you
get pregnant, yes it's terrifying, but you no longer have any control over it. Before you decide to try, you can decide not to and "spare" yourself. So I understand where you are coming from right now. You're probably feeling all the same sort of doubts and fears I had.

Good luck convincing the husband. For me, my DH was reluctant too. I think he remembered better than me everything I went through during the pregnancy/delivery and how he couldn't really help me, and I think he was afraid of being put in that helpless position all over again.
I think, maybe try to get him to talk about his fears over another pregnancy. I mean, he lost a son too, and I think sometimes people forget that. They always ask how
we are doing and forget that
he is grieving too.
Anyway, good luck. And feel free to PM me any time.