Man, my left knee is killing me. About ten days ago, I was riding in the back seat of a car. I sat in the middle seat and me knee was pressed against the driver's seat for about twenty minutes. It has hurt ever since. -I'd describe the pain as sharp at times depending on how my knee is bent. -It hurts most when I wake up and warms up throughout the day but still hurts. -The pain is under my knee cap. -Touching my knee doesn't trigger the pain, just movement. -There is no apparent swelling -No limping -It doesn't feel worse, but it's not getting better Any thoughts?