Feel like my SO doesn't care enough

I feel as if my SO doesn't care enough. We've been together for 4 years. Today, I just had enough. I'm 33.5 weeks pregnant. I'm exhausted. I'm still doing all the house work along with working as a full-time preschool teacher. I was told to basically suck it up or pay rent or move out. He told me if I move out then I'm on my own as far as this child goes and we are done. I'm exhausted - I can hardly keep my eyes open on the 45 minute drive home. I ask very few things of him to do around the house - switch out the laundry since you are home or start the dishwasher when you are done with dinner - and he just doesn't get them done. Maybe I'm just overly hormonal. But we have 1 other roommate (one of his male friend's from high school) who he would rather spend time with in the evenings playing golf or video games, doing Bon fires, etc. than with me... I'm getting really depressed and feel stressed, overwhelmed, frustrated, and just lonely. This isn't what I want for my daughter. How can I go about talking him through this?