I just don’t know…

My husband and I have tried to get pregnant with our second baby. It was over a year on our own and months of fertility treatments. Last weekend we finally found out that I am pregnant (YAY!!) but now my husband is distant. He doesn’t want to talk about the baby, he’s been really involved in himself, I asked him if he wanted to go to our first appointment and he said no. I don’t know what to do. I have tried to talk to him and he’s shut down. I’m at my wits end!