My right heel hurts constatly and when looking at it is almost as if I have a heel above my heel?

I fell in January on a wet floor pulling all the muscles in both legs. Once the pain of the pulled muscles subsided I was left with a severe pain in the back of my heel. It looks almost as if I have a heel above my heel because there is swelling until about 1 inch above the bottom of my foot/heel area. I did see a "specialist" and he put a homemade arch support on my foot that did not help the pain at all. Now it occassionally will look bruised and swell even more. My foot was x-rayd and they said there was nothing broken. I cannot walk very far at all and at times I have to use a cane. In trying to protect my foot my right knee is now beginning to hurt as well.

I am 52 years old and I am overweight, but did not have this kind of pain until after my fall.