If you didn't see my previous post, I experienced A-fib after the Pfizer double jab. May have been a reaction to a major loss of electrolytes due to Pfizer-caused chronic diarrhea. I am now taking a safer, non-laxative form of magnesium. BTW, many do not know that, world-wide, there has been a dramatic spike in food hypersensitivity due to the vax. So, thanks to Pfizer, my mastocytosis has escalated to mast cell activation syndrome (MCAS). Thus the chronic diarrhea due to myriad food allergies/hypersensitivity. NEVER had food allergies before. My only "trigger" was tobacco smoke. Foods that I tolerated for decades now cause a severe GI reaction! Loss of magnesium has definitely been diagnosed as the cause of my muscle cramps. And... the heart is a muscle. Thanks, Pfizer! A-fib is better but not 100% resolved. Also could feel blood clots due to A-fib. The two go hand in hand. Yes, I'm that in touch with my body. Used to be a dancer, super fit and limber. Used to be an industrial grunt/blue collar worker for almost 25 years. Again, very physical work, fit, limber to the max. So, when I have a throbbing in a specific blood vessel, I know! So now I take 1/2 of an adult aspirin per day as my blood thinner. A-fib is bad enough. I don't need a stroke! #VaccineRegret