Dr. said belching is a Psychological issue?

Hello and welcome to e health forum.

Belching, also known as burping , is the act of expelling gas from the stomach out through the mouth. ‎The usual cause of belching is a distended stomach caused by swallowed air. The distention results in ‎abdominal discomfort, and the belching expels the air and relieves the discomfort. ‎

In your case, since your symptoms have persisted for a long time, and are continuous, then the cause ‎can be enlargement of abdominal organs like liver, collection of peritoneal fluid or obesity. In case you do ingest ‎lot of milk or dairy products (lactose) then malabsorption syndromes can be the cause. ‎

You may consult with a gastroenterologist who can examine you and if needed order a few tests like ‎Abdominal X ray, Gastric emptying studies, or imaging like Ultrasound or a CT scan to rule out possible ‎causes. ‎

Proper treatment will include specific treatment of the underlying condition, proper dietary habits and ‎avoiding foods that produce excess gas, supplementation of digestive enzymes, medications to ‎promote intestinal motility (erythromycin or metoclopramide) and probiotic supplements. ‎

I hope this helps.