We may be heading back to where we started, but I'm trying to be calm and rational. After 3 weeks of things in the litter box looking pretty much normal, I found a loose stool this morning. No blood that I could see, but it was much softer than it had been even when he was having the blood issues. I mentioned it to my husband and he confessed that yesterday and Monday he'd fed the cat some turkey from a roast his mother made us for dinner over the weekend. It was Cajun flavored, and I'm not sure if any of the seasoning was on the bits he gave the cat, but if it was I can see it causing some stomach upset. So rather than flying to the vet I'm going to give it a few days to see if it returns to normal. My husband, meanwhile, is under strict instructions not to give him anything but food that is designated for cats. And he's still acting totally normal, so fingers crossed it was just a bit of bad human food!