Oh dear, all that work on the brink of being for nothing? Harsh, but you'll get through it - you're tough enough to have made it this far. Your story is so similar that of my adoptive mother, she's a five-foot tough cookie as well (we don't actually get along, but I can at least appreciate certain qualities of hers).

Do you have any friends living nearby? If you do, I'm sure at least one of them would let you crash with them for a bit if you can't stay where you are. Even if you don't have the money, at least you have the skills to start over, if needs be.