I was ignorant enough to do this. I foam rolled my lower back, something went wrong and basically aggravated an old injury I got from the squat in the past that actually healed fine before the rolling. Because the next morning getting out of bed was in excruciating pain. Now, I constantly feel a pinch right above my right butt cheek as if though I'm getting a needle injection and the pain is radiantly spreading in my lumbar region. Now I don't know what to do. This happened a few days ago.