I think I am suffering from cardiophobia. Since the beginning of this year I have had the issues of acid reflux. That Tim I felt that I may have heart attack and I did ecg which was fine. Later in April I did TMT whcih was fine even at 200 heart rate. Then I may I got covid after that in May end and June I was having fast heart rate issue so I got ecg thrice and echo once and all were fine . Now my acid reflux issue has mostly resolved. But something I feel little pain at once point in chest ( sometimes on left while sometimes in center). My homeopathic doctor for acidity told me that it's because of acid reflux. She told that cardiac pain first occurs while walking with many other symptoms and the chest pain lasting one or two seconds is due to reflux or muscles or bones in the chest nothing else. But again I am fearing and it remains in my mind of heart attack. I walk quite fast and easily and walk a min of 30 -40 mins daily . I have fine bp (140-80) and no other problems.