Hello! Welcome and thank you for asking on HCM! I understand your concern and would explain that your symptoms don t seem to be related to any cardiac disorder. Your performed cardiac tests indicate an optimal function of your heart. A normal echo-cardiogram result would confirm this fact. This means that other tests need to be done, to find the real cause of your symptomatology (an extra cardiac cause). A cervico-thoracic spine disorder (like degenerative changes, and a disk diplacement) could cause chest pain and radicular pain in your left arm. A cervico-thoracic spine x ray study and a nerve conduction study are needed to rule in/out the above mentioned disorder. Besides, a gastro-esophageal disorder (like reflux, hiatal hernia) could also cause similar symptoms. Do you have heart burn or burping? A fibrogastroscopy should be done to exclude this possible disorder. Hope to have been of help! Best regards, Dr. Iliri