<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi, I am a 36 year old female, 5 5 , 143 lbs. I haven t been on any prescription drugs in years! About a year-and-a-half ago, I started experiencing heart flutterings, usually around night-time. My online research of the subject yielded sketchy results, so I decided to just work out more. I figured I was out of shape, though I usually eat healthy. And, I haven t experienced heart flutterings since then; but tonight, while sitting calmly at the computer, my heart constricted for about 5 seconds or less. It was a sharp pain, and I could feel it branching out possibly nerves connected to heart? and the sharp pain reached all the way to my back. My back now has a dull pain in the area right behind my heart. What could this be? I have neglected my workout routine, for the last six months. Thanks for your help.  <response>: Hello, Thank you for your query. Based on your symptoms I would like to rule out coronary artery disease and arrhythmias? do you smoke or consume alcohol? do you have any other medical issues like diabetes, thyroid disorders for instance? any family history of high blood pressure and heart disease? Any chest pain must be immediately investigated. I recommend:- a physician consult right away- an electrocardiogram and echocardiogram- a treadmill stress test if indicated-blood tests complete blood count, thyroid stimulating hormone, blood glucose panel, lipid profile, kidney and liver function tests- 24 hr holder monitoring if required.- urine analysisBased on this a diagnosis can be made. Please do not continue your exercise routine till you have been cleared to do so by your doctor. Limit caffeine intake to a cup a day. Stay well HY Chat Doctor. Hope this helps. Please let me know if there is anything else I can help you with. Wish you good health 