Hello! Thank you for your question on HCM! Regarding your concern, I would like to explain that your symptoms don t seem to be related to any cardiac disorder. The most probable cause would be a radicular pain, from a thoracic disk disorder. I would recommend a careful physical examination and a thoracic spine x ray to exclude this. I would not exclude also a musculo-skeletic pain and an aortal disorder. I recommend performing a cardiac ultrasound, which would help examine the aorta better. If all the above mentioned tests result normal, the most probable cause would remain a musculo-skeletic pain, from a wrong position during sleeping. Hope to have been of help! Best wishes, Dr. Iliri