PCP and Lung Doctor convinced me to get the 2nd Booster now rather than waiting for Fall. Both said next one won't be ready to at least November. So, got the Pfizer Booster #2 yesterday to go with my 3 Moderna Jabs...I can report that my immune system works and is in high gear - arm hurts and tender to touch, headache, bodyaches, chills, slight fever and fatigue...Yea me...Can't wait for the next one...