When in doubt, see your chiropractor every 3 days for up to 3 months "IF" he is the best….
Otherwise unwilling to do the above, enter the E/R asap and explain all problems and submit to endless testing until they diagnose your situation.
Those are your 2 starting points for professional help with your heart problem.
It is dangerous to do self-diagnoses and self-experimental treatment.
Those willing to learn about self-experimental treatment can read what I call BOOK I until they understand, apply and mastered it and with their chiropractor, do allot towards discovering a cure for the health problems.
Your post explained little to nothing other than you may have panic attack issues or real heart issues and when your heart pressure stays above 220 you pass out…
With the info you supplied, no one can suggest much of anything beyond calling the ambulance to take you to the nearest hospital and or nearest heart speciality hospital.