We're back...we don't have any solid answers because it could be any one of several things....a p-titis flare, gastritis, or the result of her wicked kidney values - or, based on observation since we got back home, back to constipation. Her abdomen is definitely sensitive and gassy. The urine culture they started yesterday still shows nothing, but it has a few more days to go.
We came home with bupe (just in case....haven't given it yet), Zenaquin (vetty says new studies are showing that it's possible that up to 50% of p-titis cases actually are caused by bacteria and this is the drug of choice...again, just in case), and B12 to include in her fluids tonight.
Since we got home, though, Trix did go to the box to poop and only a few hard little nuggets came out, and then she butt scooted. She's gone back to the box several times, and actually is headed that way now, so I'm going to post this much and go check on her....I do have a call into the vet about this