What should i do

Hi, I am a 19 year old Male. I am very active and in good shape. For as long as I can remember I have had chest pains, when I was around 5 years old I was taken to the hospital and was told that is was merely growing pains. As I have grown older I still get chest pains and the occasional loss of breath with heart palpitations. I also just recently have been getting horrible pains in my neck and jaw line that last for about 15 seconds, granted i have only had two of these in the past 3 months, but this is nothing I have ever experienced. Also a day ago I was struck with one of the worst chest pains I have ever had, these pains often stop me in my tracks and are very painful. Why I was writing today is to ask some questions. What is the possibility of a young healthy 19 year old having a heart attack? I have also read about Unstable Angina, are these symptoms, and am I to young to have them? Hopefully some one may have some helpful answers or some insight. The last chest pain was rather frightening, and I would like to get some advice. Thanks

Yes i went to the doctor for the symptoms when i was little, but they did not do much for me but tell me it was merely growing pains. I have had the chest pains most my life but lately they have become very strong, and sporadic. I have dealt with them my whole life and not thought much of them until yesterday when I experienced my worst chest pain, the pain was paralyzing and very freighting. and Yes i still live at home, and have insurance.