I am a 16 year old male, normal weight. Tonight I was making a hot drink and I suddenly experienced chest pains in the left side of my chest and under my armpit. It was very sharp, like a cage of sharp pieces of metal was around my heart and the left of my chest; when I breathed in it hurt even more. I just stood still for about 30 seconds, then it started to go away. During these pains I was thinking "Should I get my Dad to phone an ambulance?" and "Am I having a heart attack?". Now I've got aches/cramp like pain in my upper back and upper chest. Should I get help ASAP or go to my GP? I have had chest pains before like this (over a year ago) but I'd just waited for them to go. Now I'm thinking that I might have a heart condition.