D.G.
Some very good advice from the other moms. I don't know anything about the NAET, but do some research and see if you think that's a good approach. I would definitely get in to see a pediatric gastroenterologist and/or allergist and get the IgG and IgE tests. If those don't reveal anything he may need to be tested for Crohns or Celiac. While you're waiting to get him into a specialist keep a food log -- what food and time eaten, and also the times and severity of when he throws up. It will be good information for the doctor to see. Good luck.