Welcome to Just Answer and thanks for your question. What is your age and sex? What medical conditions do you have (hypertension, diabetes, etc.) What medications do you take? What symptoms are you having? How was the enlarged heart discovered?
Thanks for the additional information. Whenever the heart has to work harder to move blood through the body, it can enlarge just as any muscle increases in size when it is worked. I hope you are being referred to a cardiologist who can determine what is causing all your chest pain and get you on the right medications to control it and improve your heart health. Until you have all the cardiac testing, there is no way to tell what is going on exactly. Certainly high blood pressure can cause heart enlargement but so can a number of other things. Testing is required in order to determine how serious the enlargement is and what it means for your overall health.