I'm 18, i'm in fairly good physical condition and don't have very much stress in my life. But lately i've had some weird chest pains, like it occurred while I was taking my boyfriend home one night it started out a dull and uncomfortable kind of pinch under my left breast and it stayed that way for a while but then just every once and a while with out warning it would turn into a sharp stabbing pain that put me in tears at one point, it lasted for about three hours. That was the last one that has happened and i've thought nothing of it but tonight while I was lying in bed reading and listening to music I felt a little uncomfortable and all of the sudden I felt my heart beat, the best way I know how to put it, race and it felt like change beats. It only lasted about 15 seconds but it took my breath and scared me.
I don't know what to think or do, i'm 18 and have never had any kind of physical problems, i've never even broken a bone. I've always been in good physical condition, I did sports all through my childhood. I'm confused and terrified. I just lost my step mother to cancer, I moved away from home, and I have no health insurance. I'm a college student that is trying to make it on my own and can't handle something like this. I don't know whether to think of it as something serious or something that I can just brush off.
I'm scared, I don't know what to do please help, I could really use some advice right now or even some one to let me know i'm fine and will be fine and live to the ripe old age of 110, lol I have to make myself laugh to not be scared. Please help.