whiteblossom horrible that it is making you feel that way.
I think men do definitely handle this stuff very differently to how a woman does. My DH pulls me back anytime I start talking about planning & chat other than is necessary baby related planning.
OK Stuff in His Eyes: Me: we probably won't be able to this concert if all is well with the baby. Him: Yes that's true, hadnt thought of that.
Not OK: Me: What do you think of this name, shall we a get crib blah blah. Him: Kmini, let's just get to the 12 weeks & then you can talk about that stuff till your blue in the face.
Men are more literal & simple in everyway. Maybe its just taking him a little time to adjust or he doesn't want to get too excited yet.
That said, my DH is super protective at the moment & is looking after me really well. Given what you are going through, he should be more supportive.
Maybe just tell him (in the most non-hormonal way possible, v tough at the mo, I know), that you need more support.
Men are indeed funny creatures, but so are we. :)