I've had a tiny, barely audible heart murmur since I was born, and I generally have a heart "flutter" or double beat, or palpitation every once in a while. But, today I had a huge screaming argument that was very, very intense and for the rest of the day afterward, I felt these flutters off and on. It was maybe once every half-hour or hour, I'm not sure.
There are no other symptoms other than a sharp pain I had down my bicep yesterday. Is this anything to worry about, or was it just stress-induced and will go away on its own?