i am 14 and i keep getting pain in my heart and my chest there are moments when i think i am about to die from the pain and i keep getting panic attacks . i have now started to fall asleep a lot and its getting me into trouble at school its been going on for 1 year and a half now and i have been to the doctors.i am not overweight just a bit chubby i also become very tired from thing like just sitting up.