Twiggy,
I've had it 3 x's this year. My sciatica feels that pain across my lower back that radiates down my behind cheek, down my (L..always L for mine)leg and wraps around the lower calf to the front of my leg into my foot. My popping is usually from my herniated disc. It is always painfull and popping from having it happen as much? Or I don't know why. I go to urgent care, everytime. They are good at dx it and treating me with cordisone shot and usually predisone, and vicatin. I feel better then do it again 2-3 months later. Good luck and get seen before it does More damage. I hope you feel better. Heather