question: Hi, I have a hard knot like bump that is under my skin( and not seen at all from just looking at my leg) it s under my in thigh. I have a smaller one on the other leg and is in the same area. I m 15 years old and have been at football practice for four weeks now. My leg hurts real bad when i pull it up or rotate it. It s hard for me to run. Could it be a hernia? Or just like a muscle cramp? Please help me as soon as possible!!!