It's probably a musculoskeletal pain.. Normally the heart beats 60 to 100 times per minute. The rate may drop below 60 beats per minute in people who exercise routinely or take medicines that slow the heart. If your heart rate is fast (over 100 beats per minute), this is called tachycardia. A heart rate slower than 60 is called bradycardia. An occasional extra heartbeat is known as extrasystole. Palpitations are not serious most of the time. Sensations representing an abnormal heart rhythm (arrhythmia) may be more serious. Your case tachycardia can be related to pain or anxiety... Nothing to worry about.. Meanwhile Watch these simple explanatory videos for understanding  the problem. Copy the link address to  browser 1) Chest pain - must know https://youtu.be/xZunqXM3G1Y 2) Heart failure https://youtu.be/rgN3ez7CkHc https://youtu.be/j2LlMRwoX94 3) Three things to do in chest pain - https://youtu.be/v7glVnwnLDg 4) Difference between heart attack and heart blocks vs heart failure https://youtu.be/X5FDPT2bY3I Don't forget to share and subscribe the channel - Dr. EDUCATION. Please do share your feedback on the below link. Your opinion is valuable. http://prac.to/idax Regards Dr. PARAMJEET SINGH MBBS, DIP. CARDIOLOGY (LONDON), FICC. CONSULTANT CARDIOLOGIST YASHODA SUPERSPECIALITY HOSPITAL