I have been having palputations since I was little, but I would only have one maybe once a month, and it was only one! now it seems like I am getting a heart rate that speeds up huge when I stand up, and slows quite significantly when I sit or lay down! I am also experiencing my childhood flutters more often then not! what could cause this? how do I get rid of it? if it is stress or anxiety how do I deal with that ? I am begging for some help, its like I can constantley feel my heart beating! also I had blood work done, and an ekg which came back all normal, I swear I am feeling this and it is ruining my life!