Thanks for your question on Health Care Magic. I can understand your daughter s situation and problem. Yes, her symptoms like chest pain, fluctuating pulse rate etc can be due to heart diseases. In children, congenital heart disease and valvular heart diseases are common. So better to first get done ecg and 2d echo. 2d echo will tell you about these heart diseases. Ecg will be needed to rule out defect in rhythm. If both are normal than no need to worry for heart diseases. She might be having musculoskeletal pain. So application of warm water pad on affected areas is helpful in her case. Oral tablet containing painkiller and muscle relaxant will also be helpful. But first rule out cardiac diseases. Hope I have solved your query. Wishing good health to your daughter. Thanks.