Hello and welcome to Healthcare Magic. Thanks for your query.
Since two ECG, Xray and evaluations by the ER doctor and your family doctor were normal, I think you should not worry about a serious problem.
Sometimes, acid peptic disease
/ stomach ulcers can present with chest pains. Anxiety
disorders can also present with a variety of physical symptoms.
I would advise you to practice relaxation exrcises like deep breathing, drink plenty of fluids, and take adequate rest. You can also try an antacid
syrup and eating a bland diet for the next few days.
Wish you all the best.
Dr. Jonas Sundarakumar