I am sorry to hear you are having this problem. Sounds like GERD to me. The sphincter that is supposed to tighten and keep your food in your stomache fails and food partially digested just refluxes up and into your mouth and/or lungs. You really should go see a gastroenterologist,,, but at least try some zantac (its over the counter & I believe prilosec will be soon, which is an even better GERD med) and see if that helps.,,, you could try tums, but they do absolutely nothing for me personally. Good luck with your problem.