I bruised my foot on a run about a month ago. At least I thought it was a bruise. It has not improved at all. It is painful to touch. I can't walk w/o wearing a shoe with some cushioning but I can run with only a little pain. It's at the ball of my foot, near the middle, directly back from the 2nd/3rd toes. Has anyone heard of/had this? Any suggestions? Thanks for any help!