My boyfriend is addicted to video games (long)

My boyfriend always played a lot of games and I've always accepted it as it's his hobby and I thought it was great because at least he was home and I could be beside him and spend time with him too. I occasionally have joined him in playing as well. It has been an issue sometimes as we never do anything else together though. As soon he comes home he'll play and I've been sad that he'd never do anything else. When I became pregnant I told him that he would have to cut down his playing because he'd had to spend time with his son. He said of course he would, he doesn't want to be a distant dad. So I was happy, but still doubting it. He played his games all throughout my pregnancy, saying he needed to as he would be able to play as much when the baby was here. I got complications early at my pregnancy and spent the last two months at the hospital and he didn't visit much as he had his games to play. Our son came and he was great for three months, then he returned to playing like before. And then he started to play even more. Started to call in sick for work to play. Now he hasn't been to work for two months and it's really hard financially. We can barely pay our bills and it freaks me out. He claims he's sick, I feel horrible but I don't believe him. He's been to so many doctors and they can't find anything wrong with him and when he's home conveniently enough the only thing that eases his "problems" is his computer chair. At first I thought maybe he was feeling down or something, that something bothered him at work, but he says it's not like that. Since we're struggling financially I said that I'll have to start working again if he doesn't go back to work because we need the money, and then he gets furious. I love him so much. I'm so confused, and sad and I don't know what to do.