Have on and off multiple bubble sound in chest area could it be trapped gas or air..suffer from acid reflux is it something serious..please help?

Hiatal hernia: You may have additional hiatal hernia/ defect on the diaphragm causing part of stomach in chest. Simple Chet xray will help.

It is likely related: to your reflux.Reflux/GERD is often associated with a hiatal hernia.This condition results in a part of your stomach being pulled above the diaphragm.The food,fluid,and stomach acid is trapped above the diaphragm,reflexes up into the esophagus and it all sloshes around going back and forth.Patients also swallow air trying to force this witches brew back down into the lower stomach and beyond.burp.