dizzyness,lightheaded, feeling a fainting attack

[seamus]

hi, i am feeling at the end of the line. ive had chest pain ,dizzy spells, lightheadedness, feeling like im going to faint--rapid then slow heart beat, inability to concentrate-- its all getting to much to take. ive been to several doctors who pump me full of pills and tell me to relax -there is nothing wrong. if thats so ,why do i feel like this ? hospital after hospital, they say the same----why then do i feel like im going to die? i have no life-- im trying hard to cope and accept what the experts say --but i still feel that there is something wrong with my heart please help