My cat (she's a little over one) was diagnosed w an URI on Saturday. yesterday I thought she was doing better, but today she has been refusing to eat. Im not sure what to do. I've tried wet and dry food, and tuna. she also hasn't drank any water. She is on antibiotics and has been using the restroom just fine, my big concern as of right now is her not eating or drinking. any suggestions? very worried about my little girl.