I am sure that your stomach is just being wierd. Some people can get this and have no underlying problems at all. The relux can cause a little nausea and it isn't unusual to burp up with it. It doesn't mean that you are going to be sick though. Just keep the foods bland and light like Jessica said. You may want to break down your meals into about 6 different ones as well instead of 3 big ones. It isn't as hard on the stomach while it is getting itself back into the swing of things.
It doesn't taka a lot to get a stomach working overtime. Acidy foods, a lot of soda, spicy foods, stress, eating too fast, too much, not chewing enough. Who knows but don't worry yourself about it hun.
Keep your chin up and I hope you are feeling a lot better soon.
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