I been having chest pain for 4 days. I went to emergency room and EKG was normal. 4 days later I have same pain in upper left side. It is localized to?

Chest pain. Could be a problem with skin, nerves, muscle, shoulder, lung, heart, or stomach. See your doctor for a more thorough history, physical exam and further evaluation.
Chest pain. If you had gone er they should have ruled out cardiac causes of chest pain. Most probably musculoskeletal pain relieved by antiinflammatories. See your doctor for help.