I have having the same symptoms as you, I have been to the doctor and was given a ekg which came back normal. The fluttering seems to be gone when i wake up and comes back about 2-3 hours into my day, I am having no chest pain just the constant flutter in my chest. I used a blood pressure cuff to check my BP and the symbol for irregular heartbeat showed up. The book says this symbol can be caused by movement during the test and I believe that the muscles might be twitching during these tests giving somewhat of a false positive on the heartbeat. The doctor put me on 5 mg of Lisinopril to control minor hypertension and also 81 mg of aspirin. After taking these medications for about 2-3 days now the flutter has not changed, if anyone has been given any advice regarding this subject please pass it on. I would love to know exactly what is causing this and how to get rid of it, thanks in advance.