Reaching Out? Advice?

I’m about 20 weeks pregnant. When I found out I got a full time career instead of my part-time job and started taking care of myself and researching about parenting and pregnancy. My boyfriend (28) said he wanted me to have this baby and be a family with me. But now, he’s claimed he’s “stressed” and I did it by putting so much pressure on him. I’m working all day long and have struggled with fatigue and nausea this whole pregnancy so I’m not home cleaning or doing fun things with him. I’m stressed myself! He refuses to read or research what I’m going through or even rub my back or offer nice words when I’m exhausted. When I have a hard day his whole attitude is, “Get over it. Don’t stress me out about your problems.” All he wants to do is play video games and go fishing. He has the WORST attitude and takes no accountability for the way he treats me. He’s always snapping, stress drinking, belittling me, and screaming. It wasn’t like this before I was pregnant. I feel like I’m catering to him and taking care of a teenager with mood swings. To make things worse the stress and constant arguments from him are causing me to have high blood pressure and cramping.

I want to reach out and see if maybe his parents would help me get through to him to change? Would it be out of line to go to them or would that make things worse?