FtM, 31, 5'2, 170 lbs, daily exerciser. Walk on treadmill with incline 30 mins, 2x day, lift, bike, do full body exercises at home.

When I walk, usually about 20 minutes into my walk, a painful flare happens that feels like a shin splint from hell. During the time of contact, yes, I was wearing the shin guard, but the ball still did something to my leg. It was painful, dull, at the time, but I shrugged it off and still played. There's just been a firm lump under the skin ever since. Now, while walking, that area burns with pain so badly that I have to stop. Lump isn't visible, but touchable. I don't think pics would help. Does anyone have a hunch as to what it is? thanks.