If you have new chest pain, see your doctor. That's the most important thing I'm going to write today. Plain and simple.
Some people are embarrassed that they're making a big deal out of nothing. And to be honest, less than half of the new patients that I see with chest pain actually have pain due to heart disease. But, I have encountered a man in his mid 30's who attributed the pain in his chest that he got whenever he exercised to "gerd", or reflux. At 37 years old, he had a heart attack and underwent emergent bypass surgery.
Many things cause chest pain, other than heart disease -- a pulled muscle, inflammation of the cartilage of the ribs, esophageal reflux, esophageal spasm, anxiety, depression, injury, amongst other possible causes. But do not wait -- get it checked out. See your primary care doctor, and if needed, come see me or another cardiologist for an evaulation.