@clemsonbabe sorry to hear about your pain. Why switch from Prolia if your scan has shown great results. It is working! I am not a doctor but I am also on Prolia and have not had one side effect. My back really ached a few months ago and my orthopedic doctor took an X-ray of my back. Turns out that arthritis has invaded my back but he said it is the scoliosis in my back that is causing the pain. I was on Reclast and had to switch to Prolia. My doctor stated that you can only take Reclast infusions for a few years but Prolia is for life. Please check to see if arthritis is now in your back. I really don’t think it is the Prolia causing the pain. Good luck!