Hello , The symptoms of chest pain , palpitation and breathlessness on exertion are very commonly seen in hypertrophic cardiomyopathy . The symptoms of angina ( like you are having heart attack) are real and occur not because there is decrease blood supply because of blockages but because the normal blood supply is nit able to provide enough blood to hypertrophic muscle , causing chest pain . Medication and specific .treatment for hypertrophic carsiomyopathy should be considered and that will help resolve symptoms. any further clarification needed let me know. Regards Dr Priyank Mody