My 19 year old cat started acting strange this past Monday. He wet himself which he's never done before and he hadn't been eating as much for about a week. He had also been vomiting bile. And he just can't seem to get enough water. I took him to the vet and the ultrasound showed no cancer or anything of concern in his abdomen. The bloodwork came back normal. He was given fluids, an apetite stimulant, and something to ease the stomach. He had seemed fine until last night. He stopped eating completely, has diarrhea, and started vomiting bile again. He usually always lays on the heater but since this morning, he's been laying in the bathtub, behind the toilet, or on cold tile floor. About an hour ago, I notice some clotted blood in his diarrhea. He's a little wobbly when he walks but, he still seems to be getting around fine. He seems a little confused, but I haven't noticed any signs of pain. I had assumed since all his organs were working find, that it's not his time to go. But seeing him act so strangely makes me very nervous that he's going to die very soon. I plan on taking him to the vet in the morning, but I just wanted to see if I can get some advice for the time being. I love him as if he were my child so this is very tough for me. Thank you in advance for any replies.