I'm getting more of it at work than from running, but I'm assured a stress fracture is actually related to overuse ;¬)
I finished LTOB with an aching right lower shin, very painful the following few days with a pronounced limp and need for Ibuprofen. The swelling and pain settled with a week without running, but a brief plod on Tuesday morning confirmed all was not still right. The physio is as sure as he can be without a CT scan that it is a stress fracture.
So its a break from impact exercise for me. Good job I have a bike ;¬)