Hi, i have a question about my heart arrythmia. If i am feeling a random quivering sensation in my chest before or after a skipped and racing heartbeat, and it occurs with activity, stress, eating a meal, execrise, having coffee and tea and alcohol, does it sound like lone atrial fibrillation? I have seen 2 cardiologists in the past 2 years who found two hundred and something supraventricular ectopic beats in an hour with my holter monitor. They did not, however, catch my episode that i complain about..it gets worse as the years go by and i have a strong feeling this is what i am up against. ((i am a 23 year old female with 2 young kids))