I got my second Pfizer vaccine on May 6th. I did have some increased PMR issues, but not too bad. My Rheumatologist ordered a full-body PET scan to find where the inflammation might be coming from if not from PMR. It was done on 5/14, with no results yet. She increased my prednisone dose from 10mg to 20mg, but I haven't started taking the higher dose yet. Waiting on my PET scan results. For the PET scan, I could only eat meat and leafy green vegetables for 24 hours prior to the scan. The next day I felt much better so I'm changing my diet to limit sugars and carbs and it seems to help a lot. May be able to stay on 10mg dosage with the new diet.