Right side of foot hurts from ill fitting shoes. hurts to walk, no bruise or swelling. doctor said x rays look fine no fracture. should i get an mri?

To find what......: The most important item not included in your query is the time frame. How along ago did the ill fitting shoes start the condition. What have you done since. I would think the wearing a great pair of shoe should turn the problem around. I f you suspect a stress fracture, then stay off your foot a while and see if the pain reduces. I would hold off on the MRI and give the tincture of time a chance.