Oh no Reb. thats no good. Going by your description there is obviously something wrong with your foot and quite rightly you are worried about it.
One of our stationery delivery guys had foot problems, misdiagnosed as ordinary fracture, originally placed in a plaster cast, 6 weeks later this was removed but the foot continued to be swollen, painful and hot to the touch. He was told thats ok, advice ranged from 'walk on it to strengthen it' to 'keep it elevated and rest'.
All in all it took 4 x-rays before he was lucky when one of the doctors on duty clicked and thought to send him for an MRI scan, sure enough he was diagnosed with Charcots foot, he is ok now though, has a deformity on his foot but he can walk with no problems.
If you continue to be worried, go and insist that you have more tests, best course of action would be to call the podiatry clinic at your hospital, explain your symptoms and mention that you are very worried that it could be Charcots foot. Its your foot and you need to make sure that doctors take this seriously.
Read more here, Charcots is not that easy to diagnose, many doctors have never even heard about it.
http://www.mddus.com/mddus/resource-lib ... -foot.aspx
Good luck with it.