Had left side chest pain with dizziness for almost a year, im always short of breath.. Had stress test thrice passed it all, ecg is normal but i had mild mitral valve prolapse w/c my cardio gave me assurance that its not my chest pain is coming from.. Also had endoscopy about 6 mos. ago but negative for gerd .. By the way when I exercise the symptoms lessen and sometimes goes away but after an hour or two its starts to come back..where does the chestpain and other symptoms come from, thanks in advance.