you did the right thing...I had a kitty that wasn't well and we went to the vet...I said I thought it was worms...she said No way ...we tested and he doesn't have worms..I again said...I think I know..I live with him...I think he has worms (though I hadn't seen any) They retested and sure enough the vet came back sheepishly to say indeed it WAS worms. Trust your guts...you live with them every day...what is bad is bad..and what is okay is okay...good on Cali to have an attentive Meowmie..
Claudia