Hi Hopeless,
Welcome to PC.
You've reached the downward spiral. I shuddered as I read your post because it brought back so many memories of when I was in the thick of my depression.
I'm really sorry you're feeling so terrible.
I could offer all kinds of advice but it's nothing you don't already know-so, I'll just let you know that it does get better, really-eventually, it does.
Unfortunately depression can only be appreciated by the people who've been through it or are going through it themselves so your husband is acting typical and I don't think he realizes how much he's hurting you. It's not your fault you're feeling so blecky and I hope he realizes that you're not intentionally hurting him with not wanting to have sex with him.
Please, stay in touch and allow yourself to feel sad if you need to. Be kind to yourself at this time-you really need it. HUGS!!!!