Hi I'm 12 yrs old and I'm having health problems nowadays. When I was young or like 3 yrs old I was diagnosed with asthma but nw my doctor said I don't have asthma and I'm really scared that it might be a heart disease I asked first to consult a doctor first. Sometimes my heart hurts and I can't breathe I don't know if it's asthma but like what I said my doctor said it wasn't asthma and sometimes I always feel dizzy and weakym mother calls me couch potato because i always stay at rest and when I go up the stairs it takes me 1 to two minutes to reach my destination.
I'm really scared that this maybe a heart disease because I know this is one of the deadly disease of the world so I just would like to ask if what is my condition? what's my sickness? what could I do?

And one more thing.
I asked this on yahoo answers to make sure what is this sickness I'm having before I consult any doctor so I ask for your answer I really appreciate all ur answers


NO MEAN ANSWERS PLZ!!!