I had a herniated disk in my l5-s1 area. 9 months ago I was diagnosed because of bad sciatica. I did the physical therapy and changed my lifestyle. By August I was pain free (for the most part give or take a few aches and pains). Yesterday I woke up and my back is killing me! Today is worse. It is not in the leg which is different from the last time but the back pain is terrible. I thought if the pain goes away for so long it is healed? I know it is the same disc because you don't forget that pain and it is in the same area as before. Why would this hurt again????