A normal heart rate is 60-100 beats/minute. It is less if you exercise and more if you don’t. If you are repeatedly concerned about your heart rate or rhythm, be sure that you are getting regular exercise. The absence of exercise may make you more aware of your heart. If you have had the symptoms evaluated and found no underlying heart disease or dangerous rhythm, the primary concern is to relieve your symptoms and anxiety. Finding nothing dangerous does not necessarily mean that heart rhythm is not the source of what you feel. On the other hand, an EKG periodically is not a way to find something. I usually recommend a long term monitor to try and catch the abnormal rhythm and tie it to the symptoms that you feel. Once you know what it is and that it doesn t matter, that alone makes it bearable. There are also tools that allow you to record your rhythm with the telephone. If a monitor finds nothing, you may want to look into one of these apps. If your symptoms only occur every few months, its great to try and catch it with the electronic device that goes every where that you go. You can then show the abnormality to your doctor.