It sounds like pouchitis to me. I started my antibiotic a few minutes ago. I have the same feeling you do. I don’t usually have a fever some people do. But I do have the urge to push and it’s very runny. But I also have cuffitis so sometimes for me it’s hard to know the difference. But today I just feel terrible.
Keep us posted. I hope you have an antibiotic on hand. I’d start taking it right away. I hope you start feeling better real soon.