Constant burping, small pain below ribs.

From last 4-5 days I have been getting excess and unusual burps, small pain just below ribs Have taken rabcer20 for last 2 days in the morning and night before having food, it gives little bit relaxation. However this burping is still continuing. On the first day, even I vomited in the night after sometime of having meal. Please suggest Small gas bubble feeling just below the ribs and unable to sit comfortably especially immediately after having meal or even drinking water. Excess gas bloating is also there. Stomach seems to be full and heavy immediately after drinking water or having meal. Please suggest. My age is 28 years and I am male. I had appendicitis surgery also when I was 16 years old (just incase if this has any correlevance)