Hello all,

Just wondering... I have noticed this from time to time in my adult life. Sometimes if I sit for a long time and I stand up abruptly, I get extremely nauseated. Then after working hard to fight the v* for several minutes, my stomach just starts to hurt badly,and the nausea is gone. Then, I start passing gas. It is like a cycle with me. When it happens, it happens in that order and is so predictable. I have yet to figure out what it is, as it has bothered me off and on for years. I would say it happens on the average of once a month or so. Any insight would be great.