I have left buttock pain, feels like I have big lump, nothing there, the pain goes all down the left leg into my foot, and over to my right foot. It's also in my groin. It burns, tingles pins, and needles sensation, numb. It's so hard to explain, but it's ruining my life. MRI Normal. I know something is not right. Doctors doing nothing else. In in physical therapy twice a week. It helps but not enough. Please someone tell me what I can do for relief. I feel doctors think I'm crazy.