Thank you for the query.
When the chest pain appears, heart condition should be checked at first. You should have heart ECG done to make sure there is no heart muscle ischemia especially that you have some heart muscle inflammation
. Also heart ultrasound should be performed as well. Such symptoms can not be neglected and treated without proper diagnosis.
Even if your symptoms are not produced by your heart, but it all comes from your stomach, it is strongly recommended to have upper GI endoscopy to make sure there is no peptic ulcer
, there is no Helicobacter Pylori
and the most important to rule gastric cancer
Giving you Omeprazole and Zantac (by the way, this two medicines should not be taken together, this are exchangeable medicines with different way of working but with the same result - stomach acid secretion reduction) without proper diagnostics is a very serious mistake.
Your symptoms may also be caused by asthma which is very commonly associated with acid reflux
disease. So the chest X-ray and blow test (spirometry) should be performed as well.
Hope this will help.