I have had fast heart rate since this all started (used to be resting in the 60's, and then it was resting 120's to 140's when this began)... I do have these other periods where I suddenly feel funny and it's in the 40s .. I also have palpitations , more when this started, better now, as is my heart rate.. but the palpitations seem worse when i'm lying on my left side! :?//