Angry with my husband

We've just been fighting a lot lately. I am 7 weeks pregnant so I can be emotional and moody at times but it's also just a lot of stuff he does that would piss me off even if I wasn't pregnant. First off he decided to go back to school several months ago and took out a little over 5000 in student loans and now he doesn't want to finish school so basically he got in debt for nothing. Mind you I just paid off all our debt in October and now we have more. He also never studies or even tries yet is giving up because he isn't getting good grades. Then he gets a possible promotion at work where he will make 5 dollars more an hour BUT his hours will be 5 pm to 1 am monday thro friday for the next year til they can change his shift. I work 8 am to 530 pm so I'll never see him and he has a daughter who he has every other week so I'll have the responsibility of taking care of her and my son while pregnant. I don't mind taking care of her she is my step daughter but he didn't even ask me if that would be ok. I told him last night it was all stressing me out and he rudely responded "why are you stressed out? You're more stressed than me why can't you be happy for me?" then he said he was overwhelmed and asked me to "baby" him. I blew up and reminded him that I feel sick 80% of the time and he hasn't babied me once. Then to top it off he tells me last night that our date night saturday isn't happening because he's gonna play cards with his friends and that if I want to spend time with him I'll have to go with him. That doesn't sound appealing at all so I guess my Saturday night is ruined. Idk everything just sucks and sometimes I feel like leaving him because he's kinda selfish. Whenever I get upset he won't let me talk he will say "here we go" or "you always make out to be wrong and you think you're always right" so now I just don't express my feelings to him. Sorry it's so long but I would like some advice. Yes I can sit him down and talk but like I said whenever I try he makes a sarcastic remark which just ends up pissing me off. How should I handle this?