I was told i have supraventricular paroxysmal tachycardia (atrial fibrillation) i am on metropolol 50 mg in am.. 25 at night.. also on flecanide 100 mg.. 2 times a day.. it was increased a year ago.. i have very bad anxiety..though ive been an anxious person...and a feeling that something is sitting on my head.. for years i have been on meds for fast heart beat. i was on cardizem and something else. but doctor took me off because my bp was low.. it had done fine for years.. never had issues.. now i feel bad all the time.. heart still skips and races.. sometimes gets way over a 100. but they say dont worry.. it pounds in my chest alot..i am waiting for results of 5 day monitor i wore... ive been to er several times and they find nothing..they say dont worry.. as well... that my heart rate isnt bad.. their normal isnt mine. my heart stays around 65 or lower..so anything over 80 pounds against my chest and feels like its racing..