I Swallowed Some Hot Food 2 Days And It Was

I swallowed some hot food 2 days and it was difficult to eat or drink yesterday and today. All day today I have had no desire eat (not even the least bit hungry) and I am burping a lot. I took Zantac yesterday evening and today, which I take regularly when I have reflux, and I have never burped this much and for this long. Where is all the extra gas coming from?