Your symptoms are indicative of "gas" or distension of the stomach or intestines, rather than reflux. In the latter, one typically experiences "heartburn", a sensation of burning behind the chest bone, or regurgitation of water or food into the mouth.
A medicine from the group called prokinetics, usually help. You could consult your GP. They come in various names depending on the country that you stay in.If it persists, he might suggest getting an ultrasound
or UGI endoscopy