With only 5 days, I don't think it is possible. Unless you can think of a job that a person would pay you by Western Union for.
My best advice is to make the money offline, if the time restriction is this harsh. Have you considered getting a loan from a family member?
You can always do a car wash or sell bottled water if you live in a warmer state, shovel snow, mow lawns, pick up dog poop, dog walking, cleaning service etc. If you have anything you can pawn use a pawnshop, then buy back your item later on.
Best,
~Naz~