Posted 9/20/2012 12:54 AM (GMT 0)
YYC,
I have had the pain you are describing, but never had it diagnosed because of the way it came and went. I just get to a bathroom quick and try to go.
Sometimes it feels like a knife being stuck in my bottom..all I can do is change positions (sit if I am standing, or stand if I am sitting) ...I think it is a matter of air shifting, and you either pass the gas, or it goes backwards and offers a bit of relief...
Good luck :)