Hi I have had chronic Back pain for 20 years. I usually have pain after a bowel movement even though I am not constipated and feel like I have the urge to go even when I can t. I have recently had RF procedure to L4,L5, and S1as well as sacral injections. I am still experiencing pain although I was pain free for about six days. Do these same nerves affect or are they affected due to bowel ? movements?