Hello! I m 26, no family history of heart disease since 08 month m having chest pain, sudden sweating, fast heart beat, dizziness, confused all time, when i lie down i feel my heart beat every where, shortness of breathing.., n recently i hav done my ecg n it shows borderline ecg with probably left atrial abnormality.. Dr. write a blood test and chest xray.., and wen the test done dr say its good, do i hav to worry and go by other test... kindly suggest me