Hi, may I answer your health queries right now ? Please type your query here...Good morning. My 5-year-old son is frequently burping. His pre-school teacher reports that when he prepares for nap that he burps many times. He recently got several vaccinations, flu, polio, chicken pox, etc. and developed a bit of congestion following. This morning I noticed him coughing and burping often. Any light that you can shed on this would be much appreciated. DeVera