For at least four years I have been experiencing severe back pain, and I am only 19. I have pain in my mid and lower back. A few years ago I went to the doctor, they did an X-Ray and found nothing, I then got an MRI. The MRI showed a bulging disc (L5) in my lower back, which seemed to explain my lower back pain. But my mid-back pain was severe and since then has only gotten worse, and the bulging disc in my lower back does not explain my mid-back pain. It hurts constantly, there is no end to it. Every moment of the day my mid-back is hurting. What could be causing this that wouldn't show up on an MRI or X-Ray? Has anyone experienced anything like this? I'm also in good shape, a healthy weight, and have played many sports over the years.