I'm 13 years old and today I was almost asleep when it felt like my heart stopped for a second and I gasped through my nose? After that I was fine and when my dad came home from work I 'demonstrated' the gasping through my nose and it felt like something in my chest popped. Its been a few hours and the big pain comes and goes but a dull throbbing stays in the center of my chest. I've been to a cardiologist for previous problems and was diagnosed with Tachycardia I also have really bad anxiety.

