I do have Acid reflux, IBS, severe anxiety/panic disorder/depression. Last year I had alot of rumbling going on.. and its been a off and on thing. This past week, I had the same rumbling but a slight pain across my upper stomach, sometimes on the right and sometimes left.. doesn't last long, it sometimes feel achy.. this past week cause of something that happened in my family, my stress/anxiety went off the charts.. usually I run for a bathroom but instead I can't go to the bathroom, and I can feel the gas but nothing. A little nausceous with it too. What could this be?