CONTINUOUS BELCHING / BURPING. Send.

Sir, My wife 30 Age is having problem .. She says that Belching/ Burping is coming out from stomach and is not leaving from mouth easily as routine, somewhere it is getting struck up, We had tried with two doctors and done endoscopy test, doctors said it is ok and provided the following medicines TAS ACTAPRO 100mg Cap Ocid 20mg PANTOAD HP KIT TAS LEucide Digene Gel Other some more tables, I could not understand from doctors prescriptions. My wife is continuing this prescription almost last 20 days; however the belching/ Burping issue has not solved. even not able to understand what is the cause for this; could you check and provide any solution any other medicine. I have the report, if required please let me know, I will send.. Thanks..