I am NOT a medical professional, but I can share with you a relative's experience that was attributed to thyroid irregularity. If your drs. did not test for thyroid function in all the blood drawn, you might want to ask about it at your next appt.
Good luck...I'm sure it's unsettling to have your heart act up.
__________________ Suzi & Dori   Vicki, Meggie, Snookie, Peach |