@sparker1, Since you mentioned being on a prednisone taper, I wonder if the taper has caused this reaction elevated reaction for you. When I tapered off my 10 mg prednisone dose 7 years after my transplant, I was miserable! - and that was without a Covid19 vaccination involved. I would experience days of discomfort and would need to go back up for a while before I resumed the taper. My PCP was fantastic to offer his support and suggestions along the way.
I had my 2nd dose on Friday. I hope that by the time you read this message that you are feeling better.