100% exact same scenario for me. NEVER had allergies. Always active and playing sports. I can't even play adult soccer now. I have been to the cardiologist due to rapid heart rate and palpitations. I has EKG and Echocaridiograms (ultra sound of the heart) and everything is normal except for tachycardia which is fast heart rate. I have been prescribed flecanide and it has really helped with the fast heart rate and palpitations.

However, I had never experienced this until after I had the vaccine (Pfizer, two shots). I wish I never did it but I thought I was helping protect others. I'm sure there is a different thread for this, but I am really struggling because I think the vaccine created a reaction where my body is producing a THICK, STICKY, SALTY mucus and phlegm that I can never get rid of. I hope that I can get some type of remedy for this issue and stop guessing and blaming things that may have nothing to do with it.