14 year old having chest pain

hi,
i am 14 years old and i have mitral vave insufficiency. i have lots of chest pains on the left side that goes through my back and all the way down my left arm. when i am having chest pains it does not hurt to breath or anything, its just there. it worries my cuz i already have a heart problem. so my Q is, should i be worried? and what could it be?

[Encephalomalcia]

In speaking with heart surgeons in person, they have told me that valve symptoms are shortness of breath.  That when valves are bad, you do not get chest pain from the bad valves.  You do, however, get chest pain from arteries blocked and spasming.  You should see the doctor regarding the chest pain.  You could have a blocked artery that needs to be opened.