Hi, im really worried about my heart,its beating very fast and ive pain/tightness,this started last wed night so i went to AE,they did an ECG/bloods and chest xray all fine but they kept me in,i then had another ECG the next morning and another blood test,they also were fine,i had to have an ECG on the treadmill well the treadmill ECG was fine but my heartrate at rest was 116 going up to 140...i was told i probably wasnt going home but they then decided to sent me home,anyway my pain/tightness amd fast heart rate is still happening and im worried sick,i went back to AE this morning and again more bloods and a ECG,they were all fine,they say its anxiety!!!! im scared,can anyone relate to whats happening with me?