Hi, I have severe pain in my lower back, pain that runs down my buttocks, and my feet sometimes get cold. sometimes I cant roll over in bed, and at times when I try to get up, I feel like my legs are going to give out. I have to grab a cane. The pain is so intense, I go from a 0-10 in a minute. I had a laminectomy a year ago, for a blown disc lower back, but the last three months have been the worst, im not better. do you think I need an Mri, or x-ray? Help please, thank you