I went to the doctor with similar problems,but mine also included sharp pain in the area beneath my ribs on the right side. Is the pain subtle? or is it jabbing? It's entirely possible that you're experiencing trapped gas within the general area. Keep an eye on what you eat, write it down if you need to. If it's associated with something specific, it can help with a diagnosis. If you're able to, and the pain comes back, get to a radiology center or somewhere that can run an ultrasound; they're relatively inexpensive as far as medical procedures go, and they're often used to help any abnormalities inside of you.
Good luck, and don't let it eat you up too much :)