I'm not a medical person, but I would say a few things - there is an excellent discussion of the many causes at
Plus, you need to go to a good doctor, you know that, right? And by that I mean see an internist, not a cardiologist who will jump to the conclusion that it's heart related. I had a friend who was on heart meds and scared to death for years before a better doctor found it was inflammation of the esophagus
and fixed it with two weeks of antibiotics.
So, stop putting this off because you're worried. At your age, it is unlikely to be anything serious, I would think. Get it fixed and out of the way. And then when your future patients act like chickens, you'll have some empathy :-)