DH was totally uninterested through my pregnancy with dd. She wasn't planned and he was completely doom and gloomy about the whole thing, used to say things like "how can i get excited when its ruined my life" and would just roll is eyes if i mentioned anything to do with the baby or asked him if he wanted to feel kicks etc. I was really scared it wouldn't change after she was born, and also felt i couldn't talk about it to anyone cos all my other friends had partners who were excited about their babies, and also felt like I was being disloyal to dh if i told anyone how he was being.
DH actually delivered her, (under the supervision of the midwife) and was instantly overwhelmed by her,something i had never expected, thinking at best he would gradually grow to love her.
Although he felt love for her and could cuddle her and look at her for hours, he found it hard to deal with her as a tiny baby, he couldn't really talk to her, didn't do singing silly songs to get her to stop crying, could never tell if she was crying through hunger etc but as she has got older the bond has just grown and grown and at 16 months she is now his mini-me. The bulk of childcare is still my responsibility but he now plays with her, takes her to the park, talks to her etc and every day says he is amazed by her.
Baby no 2 is due in 2 months, and again he hasn't been interested in the pregnancy (although he is trying to be this time)-he now is worried that he won't be able to love this baby as much as he does dd. I'm not upset or worried this time though, as i know once the baby is here he WILL change, as i am confident your DH will too.