Dear mister. This is typical for hiatus hernia
. Your stomach gets bloated, your intestines too,also vagal nerve
is irritated and gastric acid
is irritating your stomach. Your weight is risk factor as well.
You need to avoid food which aggravate symptoms especially alcohol, coffee and fast food; need to take antiacid medicines and do gastroscopy to evaluate size of hernia and neccesarity for surgical treatment
. Hiatus hernia wont regress spontaneously. It it usually easier to sleep on your left side and with raised upper body.
Wish you good health.