My attacks have been just like Bob's for the past two-three weeks. My attacks are mostly Upper GI, as well. I will get major nausea, indigestion and A WHOLE LOT OF BURPING!!! I will also feel like I need to go to the bathroom, eventually, but nothing comes out. Personally, I think it's because of my nerves.....when I get sick to my stomach it makes my lower gut cramp up, too. It feels all cramped up and twisted up....it hurts pretty bad! But, I can tolerate all the pain.......I cannot tolerate nausea and all of the upper GI issues. I despise feeling sick to my stomach! Last night I had an attack and I took a Pepcid AC maximum strength (20mg) and it eventually just went away. I'm going to keep that stuff handy. It really helped with my upper GI issues last night so I could focus more on getting rid of the lower GI issues quicker. My attacks can be as long as 5 hours. Last night it was only about 2 hours, which is about normal for me. Michelle