Miss M - my husband was 39 when we got pregnant, we were trying and he still freaked out and was really uninterested for most of the pregnancy. It really hurt as he was not sure he ever wanted children and I convinced him to. It all changed when DD was born. He was smitten. I know your situation is very different, but it is early days. Hopefully he will talk to you soon about it and you can ask him about what he is most worried about. How does he think being 'immature' is going to impact on parenting? What does he mean by it. I think immature is often another word for selfish (at least in my personal experience). My DH still goes out heaps, we still socialize heaps (but in different ways) and have just gotten better at budgeting. DH is still immature and selfish even at his age, and it does cause a lot of issues for us i must admit.

I hope he will open up and talk soon and then you can work out what is best for you and the belly baby.