I've had this pain too. It's just in the middle above the stomach. It seems to be gas but it hurts very much and I haven't been able to sleep in over a week. The number of BM's seem to be fine, although the quantity is quite large. It is tapering off right now but I've had it before. When I spoke to the GI he said it wasn't UC. I wonder if it is some infection that adds on to our UC symptoms.