Hi and thank you for choosing H C M to post your concern.
I read carefully your question and in my opinion your
chest pain is a noncardiac chest pain since your cardiac examinations turned out good.
Do you have any other complain for example cough ,difficulty breathing?I am supposing no since you don't mention in your question. This make me think that is less possible a chest pain associated with the respiratory system
Is your pain infuenced by eating or does it worse while supine,or increase in intensity with movements of the body?
It would help me to have this information to narrow the differential diagnosis of your chest pain.
Now my conclusion is that the most possible causes of your chest pain are as follows:
Gastroesophageal reflux disease,spasm and gastritis and if this is the cause, your pharmacologic therapy may include antacids such as
Ranitidine,protons pomp inhibitor such as
omeprazole and lifestyle and dietary modification.
Costochondritis is an other possible cause and the treatment include painkillers such as Ibuprofen.
Sometimes chest pain can be a manifestation of anxiety disorders.
I hope my answer can help in resolving your complain.
Kind regard
Dr.Dushi