Why am i having chest pains? heart attack?

My heart rate is normal and blood pressure is normal. It feels like idk... pressure in the area of my heart and occasional feeling similar to heart burn. Lots of discomfort. Though my heart rate is normal, it seems unusually high slightly. I am highschool now college athlete. Sometimes when im kneeling and i go up fast i get a half feeling of passing out. Also i do know i occasionally have a minor heart murmur. I guess thats all possible details i can provide. should i see a doctor for this? i know people and have some relatives of mine that have died from this ****.