Hi ! The symptoms you have described shows that the pain and discomfort comes whenever your intra abdominal pressure increases. The possibility of a para esophageal hernia or any other uncompleted internal hernia
can not be ruled out. It is very difficult to diagnose these cases from external examination. Sometimes it may give rise to symptoms of Gastro esophageal reflux disease
, dysphagia, etc. These can be diagnosed with the help of X-rays chest/abdomen and a CECT abdomen. An ultrasound
may also be done to exclude hepato biliary pathology. Till then, you can start taking some antacid liquids and a proton pump
inhibitor for reducing the acid secretion in the stomach. If the pain is too severe, then one can opt for a anti spasmodic.
Hope this information will help you out.