Hi I Just Went To See My Gastrointestinal Doctor Upon

Hi I just went to see my gastrointestinal doctor upon examination of my chest he told me he could hear my heart beat in a lower area where no heart beat should be heard he advised me to have an eho exam of my heart should I be worried? I do not have shortness of breath my legs are not swollen I am very concerned I have high book pressure but I take medication I think I might have high cholesterol I do not take medication for ,I am 75 years old