Confused kids

My husband and I have been a little rocky for months now..we found out in February that my birth control failed and a little one is on the way. Tho unexpected a child is always a gift and I've been trying to stay positive even tho he left and will barely speak to me as he says I am "selfish for keeping the baby" and haven't considered his financial goals or what he wants..he also said I was not thinking of our other children. The boys are all excited about the baby but they are confused as he doesn't allow any mention when they see him at all or he gets mad with them and me..I am not sure how to handle it all on top of 60 hour work weeks to pay the bills myself and without coming across as bitchy when I talk to him about the effects on the kids..any suggestions?