question: I am 25 year old female. 5'8" 260 lbs. Been having chest pains off and on for past two years. Pressure, pain on left side of chest. Jaw pain, back pain, left arm tingling. EKG, stress test, ultrasound say it is not heart problem; cholestrol normal, blood pressure is borderline high. One doctor says its muscle pain, another says mitral valve prolapse. I'm still worried that it is heart disease of some kind. What could it be?