I had a heart murmur since I was a baby and the dr said it's still really loud. I had it checked when I was 7 but I have chest pains. What could it be?

Heart murmur. What did your echocardiogram reveal about your heart murmur? Do you have a significant valvular problem? Your chest pains may not be related to the heart and more info is needed about your chest pains to make a diagnosis. Your physician who knows your condition is best to advise you.