A few days ago while shopping I had a sharp pinching pain in my lower back (very low back just to the side of the center back, just above my butt) today around noon it felt like I had a very bad bruise on my inner thigh. About an hour ago, I got home and changed into sweatpants and when the pants rubbed against my thigh it felt like it was burning and bruised. It hurts when I move my leg and when anything touches it, even when my pants run against it. It is not red, not warm, and from what I can tell it is not swollen. But it is so painful but there is no bruise there...I m wondering if this could be something serious. I am 31 years old and have been a type 1 diabetic for 30 years.