@leezer and other patients with Rheumatic conditions may find the following article shared with me by @hopeful33250 helpful.

Op-Ed: Rheumatic Patients Should Proceed Cautiously After COVID Vax — Certain patients with rheumatic and musculoskeletal disease remain particularly vulnerable: https://www.medpagetoday.com/rheumatology/generalrheumatology/92255

The above article has a link to the following guidelines from the American College of Rheumatology:
COVID-19 Vaccine Clinical Guidance Summary for Patients with Rheumatic and Musculoskeletal Diseases
-- https://www.rheumatology.org/Portals/0/Files/COVID-19-Vaccine-Clinical-Guidance-Rheumatic-Diseases-Summary.pdf