I feel like my relationship is falling apart...

Guys I need help figuring out what to do... I'm so miserable in my relationship... I'm 36 weeks and feel I do everything... I clean the house, I do the dishes, I've clean out the nursery and try to get that in order. I vaccum up after his dog and I beg him every day to help but his excuse is he "works more and harder than me" so he just wants to play video games when he gets home (I'm a hairstylist that's on my feet 8 hours a day, he works at Dillard's selling jeans) he jokingly insults me all the time, it's so hard to get a complement out of him... He's mad at me that I took my leave so "early" cause i couldn't stand any longer. More than 5 min on my feet and I was in extreme pain... he makes me feel like I'm not really wanted. Like he said if I don't like things in the house I can just leave... sometimes I wish I didn't get pregnant cause he's made this thing that's supposed to be so beautiful so horrible for me. I feel like he only cares for the child and that once she's here he won't need me anymore. I just feel like I can't do this anymore...