How To Treat Spinal Stenosis?

Hi Doctor I have stenosis of the spine. The pain is in my lower back on the right side of my back and goes down my right leg. I have had an MRI that shows the disc is changing and causing pain. On the MRI it also showed where the pelvis bone that is attached to the spine ( from a fall) is suppose to be notched and from this fall it came out. Could this be causing more of my pain and spasms? When my lower back goes out the pain starts and radiates to my upper back and into my neck area. I'm 62 and a female.