Hello everyone! This is my first post but I am stressing and worrying my butt off about one of my kittens. His name is Beerus and we got him about a month and a half ago and he was plagued with an URI that has almost completely cleared up. He still has a stuffy nose. But recently I've noticed that he has had an aversion to food and has grown increasingly skinny and I can't tell if his belly is abnormally swollen or if it's normal (in comparison to how skinny he is :/) the other kitten we got is female and she was born in a different litter 6 days after beerus and she has grown and is larger and heavier than him now. Before he would eat if someone was standing with him and now he eats maybe 3 or four bites but it appears he has a hard time chewing it. (Purina kitten chow) so then I got canned food to try and get his appetite up and he wasn't having that either. So I got some canned tuna and he will lick it until it's dry and eat maybe a few pieces but that's it! I made a vet appointment for Saturday but I am just worried about my little guy and was hoping to hear opinions in case I should bring him in on an emergency visit. I have considered worms, and they said to bring in a stool sample. Buuutttt, I really haven't seen him use the litter box except for a #1! So then I thought maybe constipation. But I've also read about FIP and I'm just terrified and we need help thank you for taking the time to read this and help us out.