Im 22, 5,9 , and Have GERD, and have extreme heart pain. At night I cannot sleep due to heart palpitations. In the morning I feel really tired, out of breath just walking up the stairs, and pain across the back , on the left side. The area over my heart is really tender, and I have frequent heart pain all day. I also feel like I cannot breathe in all the way. I went to the docters, but they say my EKG is fine/ Blood pressure is normal. I feel something else may be wrong but they are not seeing it. Im told Im fine and too young to have a heart problem.