Recently, I had a weak heart and went to the doctor, did an ECG and an ultrasound at 2 hospitals, but the doctor said it was normal, the X-ray also showed no signs of heart disease except for mild tricuspid regurgitation and valvular regurgitation. mild aorta. But when I do something like carry clothes from the drying yard to the house, my heart beats faster than usual, walking also feels like my heart is squeezed and a little dizzy. So the doctor asked me to ask if the heart palpitations with dizziness are signs of disease?