Can feel heart beating in chest. dull pain in chest off and on. 38 y.o. f. regular color and breathing. resting heart rate of 68. what could it be?

Arrhythmia, sinus?: You feel your heart beating in your chest. You note your heart rate is 68. It may be sinus arrhythmia this is a pause and then strong beat after. It could be atrial fibrillation or other abnormal rhythm. Your heart can be beating but only contract at a lower rate (68). If you feel ill or have family history then see your doctor for a cardiology referral to see an electrophysiologist. Ok