Hello, Since February 2020, my heart is pounding, with not fast but strong heartbeat. ECG, echocardiography and Doppler are absolutely normal. My blood and hormonal exams are normal. I’m 25 and was very sporty and always eat healthy food. I tried beta blocker, no effect. I can see my feet, my arms and my belly shaking with my heartbeats and I have pain in my arteries since February. A barium swallow showed a small hiatal hernia and important gerd. I don’t know if it’s linked because my heart beats strongly even whiteout eating, but swallowing increase the force of the pulse. Maybe I will have a hiatal hernia surgery. My life is horrible since that, I can’t sleep normally and always have chest pain and feeling my heart. I’m wondering if a heart sintigraphy can reveal something like a thrombus. Can it be the heart neves who are over excited ? If someone find the cause, please tell it here !!!!!!!!!!!!! ( I’m not anxious and live with that crazy heartbeat since 6 months)