Pressure in my sternum and feel like i need to throw up. hiatel hernia and anxiety. possible flu. ekg and bloodwork normal.

Could be anxiety,,: This could easily be anxiety, especially from your real condition of hiatal hernia. You've got some significant symptoms, especially the back pain which can be many things like a tear in your esophageal-gastric lining or the beginnings of an ulcer or pancreatitis. It would be wise to see your doctor to talk of stress relief, diet change, and to rule out a serious issue like those mentioned.

Sounds like: Gastroesophageal reflux. Initial treatment is medical management with acid reducers and prokinetic agents. If this is not successful with relieving symptoms or there are cell changes on endoscopy, you might even need endoscopic or surgical procedure to correct this problem. Ask your GI specialist for specific recommendations.