I have what feels like electric currant on the left side of my heart. It buzzs for a second or two and keeps doing it for maybe thirty seconds.  It feels so deep that if I was not still I would not know it.  I have A-fib and have had a ablasion in 2006.
Hello! Welcome and thank you for asking on Chat Doctor! I understand your concern and would explain that your symptoms don't seem to be related to any cardiac disorder. Is this pain modulated by respiration or body movements? This type of pain would be typical of an extracardiac cause (muscle skeletal, pleuritic, pericardial, a herpes zoster related pain, etc.). I recommend consulting with your GP for a careful physical exam and some tests