I'm so very sorry for the loss of your amazing daughter, If you ever need to talk i'm always here.
Peter was very much the same in regards to not wanting to speak about Tegan after the birth, When people tried consoling him or generally talking about Tegan he changed the subject quicker then the blink of an eye. I never pushed him into talking about her or what happened i let him do it in his own time. In time your husband will come to terms with it, Until then just let him feel as upset, angry & emotional as he wants. It took Peter about 6 months to openly talk about Tegan to me and others, He did however comfort me in my time of need.
In relation to wanting another baby only the 2 of you can decide that. I always thought if i had a baby so soon after Tegan it would be replacing her and i just couldn't do that. That was my thoughts back then. Since having Trenton (4 years later) i now know that it's impossible to replace Tegan.
All the best to you and your family, I'm here if you need a shoulder to cry on or just a chat!