Empty feeling...

I don't know who I am anymore. I've suffered with depression for a long time. I used to cut and have attempted suicide before. I have a son now, so I would never do anything to risk losing him. But my depression still haunts me all the same. Some days I'm okay. And then it'll just hit me again. It's an overwhelming feeling of hopelessness and sadness. My husband is a porn addict. This struggle has been ongoing for years and in turn has left me feeling completely worthless. He won't get help even though he admits to having a problem. I don't know what to do. I'm miserable, but I have to think about my little ones too. He also recently got laid off from his job. And to make things more stressful, I'm pregnant again. I have no friends anymore. I don't have anything, other than my son and my unborn child. And though I love them, I feel so trapped in this situation because I have to consider them first. Some days I wish I could just disappear, but I can't even do that because they need me. I feel so alone and empty.