Hi, i am 19 years of age, i had open heart surgery as i was 3 months premature, i grew up with what seemed too feel like nipping in my chest i followed it up with my GP and he said it was trapped nerves from where they operated, i didn t really have much bother with it till last year when i was resting one evening when what felt like my heart suddenly stopped, i contacted my doctor and he said they were heart palpitations are they are normal but recently i have been getting them more recently for longer and my heart rate seems too be higher between 120-130 bpm, is this is sign of something serious as i had my open heart surgery or is this just me being anxious? Thanks