Overreacting?

So my boyfriend was making a "joke" and said that he and I should have a threesome with his ex girlfriend, whom he has a child with and has said in the past that if he got back with one of his ex's it would be her. So I didnt take it very well and at first I tried to make a little joke out if it but still let him know it's not ok. I said "you must be either drunk or high to make that comment. Are you still drinking? You may have just seriously screwed up". And he immediately started acting like I'm wrong for being upset at all about it. Calling me a "thunder c*nt", saying how I dont appreciate that hes working 45 hours a week(which I told him at least 3 times today alone that I'm proud of him) and he can find a girl who will worship at his feet for busting his ass and that his buddies up there would laugh at me for being upset and they'd never put up with that "bullsht".. Also keep in mind here that I was the ONLY one working for a year and a half, pregnant for 9 of those months and supporting BOTH of us by myself because he didnt want a job. And he keeps going on and on about how I dont appreciate him working and I'm overreacting. Oh and hes in ohio right now while I take care of our son by myself in Florida because he didnt have a place to live here because we had to give our apartment up and he refused to get a job for a month and never saved up any money because he always "needed" something new for his computer. Like I said, hes in Ohio and I'm in Florida until we get a house were waiting for and then hell move back here. He has stopped responding when I send him pictures of our 8 month old or tell him something about him. I literally have to ask him what he thinks or he just won't say anything. He doesnt ever ask how I'm doing or feeling or how my day was. He doesnt text me unless he is looking for compliments or wants to talk about sex. He ignores me for video games any time hes not at work. I feel like he doesnt care about me anymore and now I feel like hes cheating on me or moved on or something... I already deal with schizoaffective disorder:bipolar type. Severe anxiety and depression. Panic attacks. Ptsd. And now I'm beginning to just feel completely hopeless...