Hello! Thank you for asking on HCM! Your symptoms may be related to a cardiac disorder. Your past medical history is really concerning for a cardiac disorder. I recommend consulting with a cardiologist for a careful physical examination, a resting ECG and a cardiac ultrasound, to examine your cardiac function. You need to perform some blood tests ( a complete blood count, kidney and liver function test, fasting glucose, blood electrolytes, cortisol and thyroid hormone levels), to exclude other metabolic causes which may mimic this clinical scenario. Hope to have been of help! Best wishes, Dr. Iliri