hey whats up? im only 13, also young. uhhh, this kinda sounds like svt or somethin although i could be wrong since i dont know much about it since i dont have it....ask momto3 and rnrita they know quite a bit. and believe me the first time you have a bad episode with ur heart, you do feel like life is over. but dont think this way, because ive been having irregular heart beats for a year or so.... i'd say talk to the school nurse and see what she says, and if you have another attack, make sure to get down there or have the teacher call the nurse to your class. it could be absolutely nothing or it could be something that needs checked on,all depends. good luck hope you find the info you are looking for...