Yes I got the covid vaccine and boosters, and also flu, shingles, TDAP, etc. No issues. Are you aware that there's research that overlaps COVID and mast cell issues? For example: famotidine antihistamine activates the vagus nerve inflammatory reflex to attenuate cytokine storms.
For me personally, I don't yet know my root cause. I'm ramping up on medical research papers, and trying a hundred or so kinds of treatments to see what helps.