Help SO going crazy

Me and my SO got into a fight. It got blown way out of proportion. He said some nasty stuff which led to me saying some nasty stuff. I apologized but now hes bringing home alcohol every-night doing crazy ass shit and is generally making me a nervous wreck. Im almost 38 weeks pregnant. I get he is hurt, but nothing i say or do will get him to calm down. Its been 5 days now. He wants to quit his job saying its bc i fucked his brain up. And went and spray painted dicks all over a street. And freaked the hell out on multiple people. Idk what to do. I tried everything and its driving me insane. I just want to be happy and he wont calm down. He will then blows up again. Like every argument. Help please. Advice well taken.