Hello Upset (((((HUGS))))) sweetie and welcome to this wonderful forum!
In reading your post - the one thing that jumps out at me is that your problem is not you, but that lump of dead weight you are married too. Plainly put.
We're not living in the dark ages. A marriage takes two people to make it work. I can fully understand he may have trouble finding work at times (hey, we all can experience that from time to time), but somethings terribly wrong if he is content to allow his wife (that being you

) support him.
And another thing, just who does he think he is??? Royalty? If he isn't working fulltime on a job, then his sorry butt should be taking care of the house so that you, who are working full time could get some rest after you get home.
I can't tell you what to do, but I can tell you exactly what I would do. In a heartbeat! Or a New York Minute!
Apparently, if he isn't going to be a man and roll his shirt sleeves up and do whatever it takes to help you - WHY DO YOU NEED HIM?
I'd tell him to be a MAN and if he can't be, I'd point him to the door and tell him, "Hit the road Jack and don't come back no more, no more".
YOU DESERVE BETTER!
I knew a girl in about the same situation and she used to tell people (this was after her divorce) that she lost 135 pounds overnight - all deadweight.
I can and will tell you this ... Take care of you sweetie!
Your friend Sam (who thinks sometimes you just got to be a man)
"You'll never know what you're capable of if you don't try."