The Top Of My Foot Had Been Hurting, Swollen, And

The top of my foot had been hurting, swollen, and tender. At times I can barely walk on it especially after activity. My primary doc said that it's the start of a stress fracture, and just told me to stay off it for 4 weeks. Still concerned I saw an orthopedic and he said it's not stress fracture, but arthritis? I have had tendonitis before and thought it was acting up. The bone to my big toe hurts too. I walk on the outside of my foot half of the time. Could it be something else like a torn muscle? I am not convinced by the doctors diagnoses even after an xray.
thanks! Lisa