Liza, do you think you may have changed your gait, or the way you sit, stand, or walk, using muscles and parts of your body differently, that may cause pain in these areas? Also, it is my understanding, that nerve roots remember pain, and it can take quite a while for them to realize they are not compressed any more. Kind of like phantom pain, where an amputee feels pain in the lost limb.
I hope you feel better!
Carolyn