The past few months I had been getting pain in the top of my shin bone (under my knee but not on the joint) and it was getting pretty bad when I walked any distance. Anyways I noticed that I felt like this hard bump IN my bone. It doesn't feel seperate or on top of it. Like its in it. I decided to keep an eye on it to see if it went away or got bigger ect. Well it has gotten bigger.I am starting to think of what it could be and worrying its bone cancer of some sort? I cant really say if I have other symptoms as I have chronic illness so fatigue, pain and all that is just part of my life.