I recently brought my cat, his litter box and his food and water upstairs and shut the door to the basement because my cat was staying downstairs supposedly after a mouse or pest if some sort. When i first brought him upstairs he sat by the door to the stairs and meowed want to go back down. eventually he settled down and ate his food but i noticed that he was under the couch. he’s been under there all day, he won’t even come out for treats. h had come out once to drink water then immediately go to the litter pan to pea. then went right back under the couch. he’s not purring and before the issue he always purred. he doesn’t want to be petted and has no interest in me or his scratching post or toys. just lays under the couch. what does this mean?