I am a big runner and about 2 months ago I got some severe pain in my right foot. I do not over or under pronate. When I went to my ortho he said it was possibly a Stress Frac. of the 5th. Nothing showed up on the Xray but he said the bone looked a little week. He put me in a short leg walking cast for 6 weeks. i felt the pain the entire time. After my cast came off he scheduled me for a bone scan which I am waiting for now. What is your opinion of this and what should I look for.