The pain goes from my right lower back all the way to my ankle, and my foot is cold, numb and tingling.
This statement by it self say's you need more than a back-cracker.
rattler hit it right on the head, no amount of chiro-praticing is going to help a blown disc or a couple spurs grinding against each other.
Self medication in such large doses can also cause more problems than they cure.
Lack of circulation in the feet ain't a good sign either...
You best get to a Medical Doctor, and heed his warnings.