Burping on its own

Hello

 

I have been burping about 50 times a day now for about 3 months. I have no other symptoms.and the systems haven't got any worse

my doctor believes its anxiety and is sending me for an endoscopy.

None of the antacid drugs he has given me have worked.

I have read a few websites ( naughty I know) which say belching on its own is raely a sign of stomach cancer.

Does anyone have a view on this?

Thanks