What causes chest pain on left side behind breast and going thru to the back. Ekg was normal. Bad edema pain worsens whe breathing in?

Pleuritic pain? It could be part of your left lung that is sticky and rubbing against your chest wall causing pain. Taking nsaids may help reduce the symptoms. However, you always need to rule out cardiac causes! the best option is to have a multifunction cardiography test. http://en.m.wikipedia.org/wiki/multifunction_cardiogram ekg is notoriously inaccurate for women with disease!
Chest pain . Sounds like pleural or pericardial problem but other things are also possible. Go see a doctor!