I have dealt with pain in my right foot and ankle and it no fun at all. Hope you will be able to find answers to your pain soon! I would try an orthopedic doctor or foot specialist. You know you body better then anyone else, if you dont feel the doctor you have right now is helping you, find another doctor. I went you threw alot of doctors before I found the answers as to what was causing my pain. Don't give up, it may take alittle while and a few doctors, to find answers, but it will be worth it.
Take care and good luck!