I am 12 days out and lately at every single meal, I'll take 1 or 2 bites and all of a sudden I have massive sharp pains in my upper chest like under my rib cage and in my upper back. Feels like huge gas pains but then again it doesn't. I take a Prilosec and 2 Gas-X chewables a day. But not only that, after I take a bite I wicked burp. My body hurts so bad. Is it gas? Why am I burping so much immediately after I eat? Omg. How do I stop it?