hun, DH and I planned our bub. When we got our BFP, we both kinda got overwhelmed and were scared, anxious, happy. DH was worried if he could be a good dad etc. We wanted a baby but it also took us a while to get used to the idea that we were pg cos it was going to be such a big change.
Our baby is 7mths today, and at the hossy, he was on cloud 9, I've never seen him so happy. He's such a doting dad, we love our son to bits!! We cant imagine our lives without him.
I think it takes men a while for all of it to sink in.. and they might feel 'detached' as they can only see you being pg, but we are the ones experiencing everything inside us. So it's more emotional and exciting for them, but just wait till the days come when he can feel his bub move inside and the moment bub's born!!!
I hope your DH is just experiencing cold feet.. xoox