everyone has given great advice. it sounds as though he is acting out because he realises he may not be getting the kind of attention he''s used to. this time is about both of you but you are the one doing most of the work at the moment. its great if you can sit down and talk things out with him but it sounds as though he might not be open to that given that he said you're on a power trip.
personally i think he needs a dose of reality and maybe need to hear things from someone else. my doctor and the midwives have all given my husband a big eye opener simply by just explaining to him what im going through as a mum to be and what his responsibilties will be going forward. i think hearing it from someone else made it less like i was complaining and nagging and more like this is a real situation and i need as much help as possible. that and im forcing him to read Up the Duff which has also opened his eyes