I had a wrap 8 months ago. Surgery went well but ended up taking Nexium due to possible gastritis. One month ago I caught one of the stomach bugs that was passing through the office. I had diarrhea for a few days. The sulfur burps started and haven't stopped. Its horrible. I called my GI and he said to take 300mg Zantac for a few weeks. So far nothing. What's causing the burps?