2 Answers 2. The Kindle iphone app does not read pdf or epub files without conversion. There are various tools you can use to convert from pdf and epub to the mobi format that the Kindle app can read. The one I use is Calibre, and it works pretty well. Epub files generally convert without problem, but pdf files might be harder, depending on how complex the pdf is.
Irritation of the stomach from spicy foods, smoking, alcohol, or infection with a bacteria called Helicobacter pylori may all cause symptoms of indigestion, which might include excessive burping. Burping is rarely a sign of a serious medical problem.
I don't want to scare you but the fact that you have nausea associated with excessive burping could be a sign of stomach cancer. Of course, the more likely thing is that you have a bad diet and are sensitive to lactose. Try going off milk and dairy for a week and see if this helps. Reply.