Thanks for your question. I am Dr Asanghanwa Carlson. Chest and back pains have many origins. These could include parietal pains which are pains arising from the chest cavity (muscles, ribs and vertebrae), pains arising from numerous organs contained in the chest and referred pains which are pains referred to the chest by organs located out of the chest like the stomach. The true origin of the pains can be determined after careful examination by a physician. A normal EKG does not completely rule out a cardiac origin. I however would advise you still consult your physician or another physician so he/she evaluates your pain and prescribes the right management. Good luck