Splitting Bills

How do you and your S/O split the house bills??? My husdand pays the mortgage ($1,600 includes our taxes and home owners insurance). I pay all the utilities about $500. Then I also pay his medical insurance $300 and his medical bill $100. These numbers dont include my personal bills. He comes home from work and sits on his ass. He does the dishes every now and then. I work a full time job too plus take cause of our daughter (i never asked him for 1cent for her things) and im 14 weeks pregnant. But because he pays the mortgage he asks like hes god. I just need ways to approach him, whenever we talk money we fight. I just feel underappreciated. And feel he doesnt understand my point when i try to talk to him. I feel like a maid, legit!!! I work full time and i have a part time job everyother weekend. Im trying to save my money for when #2 gets here but i cant when i pay $400 of his bills. We been together almost 10 years so what we are doing works, but ..... Just how so yall split bills??

Edit: He makes $70,000, I make $38,500. I am not complaining about things being unfair. (ehh maybe a little) he gets his monster energy drinks every day and goes out to eat every day for lunch. while i dont have the means to treat myself to coffee and lunch everyday let alone to treat myself once a week which i still dont even do that. i feel he treats himself better because he can while i eat ramen and left overs for lunch.