im 16 and my doctor just told me i had tachycardia, what does this mean? is it bad ? whats going to happen? he said my heart was beating realy fast. he kinda scared me because in past doctors visits theyve never told me this. what the hell man . i asked him and he didnt answer you inconsiderate jerk. im not an idiot i wouldnt be asking u all if hed been a man and answered me.