hi, i am a 24 year old female. it started almost two years ago, i started getting pains, shrp ones in my chest, first it only started on the left hand side. i had ecgs, i had to run on a machine, all came back ok. then it started on both sides of the chest. sometimes the pain is soo bad i can't breath, and it scares me soo much, cause everytime i think- is this gonna be it. the pains can last for about 10 mins- to 2 hours. i know its not heartburn before anyone says it is because i got prescribed 'lansoprazole'. it didn't work, and it certainly did not stop the pains. please help because i feel like i am not being taken seriously. thanks %-)