How many endoscopies and in what interval it can be done? I jad undergone endoscopy in 2018 as had acidity gastritis issues the result was normal. I have many a times episodes of gas acidity. Was on rablet course for a month but did not help much. Of last few days a burning sensation in upper abdomen, and at time a very mild pain Which gets better after flataulence. And have feeling of naussea at times. belching has increased. Should i have to undergo endoscopy again? Is it anything to worry.