One of the major issues with creating a family is that the man all of a sudden feels like not only does he have a baby that requires a lot of extra work, but he has lost the emotional support of his partner because she is focused on the baby and not him.
I found that my DH was a lot more willing to support me around the house once I started focusing on his emotional needs rather than just expecting him to 'be a good father'.

I think that sometimes there is a huge gap in expectations between women and men when a child is born, and nobody really can anticipate the way the child changes the relationship between the parents. In the same way that you feel your DH is not supporting you, he quite probably feels that you have become very remote from him.

Another aspect is that if he tries to help, and you are obviously not happy with the way that he has chosen to help, he will probably think 'well why bother', instead of trying harder next time. Believe me, I UNDERSTAND your frustration only too well.
Try to open lines of communication when you aren't stressed or upset, maybe go out for a night and have a meal together, talk about something that isn't baby-related and work on your 'together time' with him for a couple of hours before bringing up the areas of conflict. Discussing it in a manner which he feels is confrontational won't produce good results, no matter how 'right' you are.

Good luck,

Kerrie