Bubbling/spasm sensation causing anxiety

I am having random pain throughout the stomach and chest region starting from the month of May, It comes for 1minutes then go away, I suspect that the gas gets trapped in some places and then it causes pain though I don't know for sure. And frequent bubbling or spasm like sensations too this is causing anxiety when it is happening like rapid heart beat. I have consulted various doctors so far they did hrct chest - normal spirometry and diffusion bdr - normal then echo doppler - normal usg whole abdomen - duodenal point tenderness. The doctors are now prescribing amitriptyline or rexipra which is just adding symptoms like causing excessive dry mouth along with dizziness. I want to have clarity in this like is it all in my head really or is it happening because of something else. I try to maintain my lifestyle like eating early, walking after eating then not eating junk but still this problems are happening to me...now I am not sure about anything.