Hi.. Convinced my booster has affected hb rate & other aspects of my immune system(66yrs old) . Happened 1st & 2nd time & again after the booster. Very breathless & heart so erratic, very fast... Started 2 days after jab.. GP sent for me to have an ECG but by then had settled down again.
Having said that.. Now under heart consultant had stress echo...induced ischaemia. Put on statins which, I think have helped my fatty liver & bronchiectasis.
Just hope heart settles down this time, tho problems ongoing. I am glad to have had the jabs cos covid would be worse I fear. ❤️