question: Im a 17 year old female and have been having terrible chest pains just under my sternum for the past 3 months, Ive also find it hard to breathe at times and lose my appetite to eating or socialising a lot lately. My father has had two heart attacks before I was born and has diabetes as well, but my health doesnt include any of his medical history; at times I even find myself becoming dizzy or being really weak on my knees.Ive had trouble breathing before but the doctors said Im not asthmatic, Im starting to get a little worried?