It Looks like you are suffering from a condition called Dyspepsia. Sometimes the propagation might be slow so that a sensation of abdominal fullness may be present causing excessive burping or belching.
Sometimes Gastric/ Duodenal ulcers or H. Pylori infection may cause similar problems
You have to visit a Gastroenterologist
Next Steps
Upper GI Endoscopy to rule out other causes
Health Tips
Take a balanced meal with enough Green vegetables
Keep yourself hydrated
Avoid processed foods