Just a followup to what Batmom said about the meds. It may not be relevant, but who knows at this point.
Piper recently had a serious bout with a recurrent UTI. I won't give you all the details (it's a very long story), but she wouldn't eat, was very very thin, and had the shakes. I thought I was losing her. I didn't think she was strong enough for the MRI that was being proposed. We decided to pull her off almost all the meds to test my hypothesis that we'd turned her into a little old lady by adding drugs to treat side effects of other drugs...
It took a few days before her appetite returned. She's not 100%, but at least she's eating.