Hello dear, thanks for your question on HCM. I can understand your situation and problem. In my opinion we should rule out pulmonary and cardiac cause for your symptoms. Because pain on inhalation with breathing difficulty is seen in bronchitis, pleurisy etc. So get done chest x ray and PFT ( pulmonary function test ) to rule out these causes. Get done ecg to rule out cardiac cause. If all of the above are normal, then no need to worry much for cardiac and pulmonary causes. Anxiety can cause similar symptoms. So consult psychiatrist and get done counselling sessions. Try to identify stressor in your life and start working on its solution. You may need anxiolytic drugs too. Avoid stress and tension. Be relax and calm. Don t worry, you will be alright.