Not pregnant but big belly?

You may be describing a condition known as IBS or irritable bowel syndrome, it mostly effects women because of their differences in internal workings, all of your side effects point to IBS I posted the link in my source, use this link as a symptom checker to make sure you don't have something worse such as Chron's or UC a href="http://www.webmd.com/ibs/ibs-symptoms-quiz." rel="nofollow"http://www.webmd.com/ibs/ibs-symptoms-qu…/a Take the quiz and it will help you troubleshoot what might be ailing you. If you found this info helpful make this a best answer, thanks and good luck