Billie, yes I have had my IBS cause svere pain and send me to the ER. Gas and the way gas can effect the already sensitive nerves in the gut can contribute to this for sure.Sorry to hear you had to go to the ER and were in so much pain I know the feeling. They use to give me a shot.Here is some gas info that might help you. http://www.gicare.com/pated/ecdgs06.htm