He has never been a big drinker of water and is a fussy eater so is quite constipated (I had him to the vet a week ago and bloods showed nothing but she gave me drops to help soften his stools. But now he's not eating either, and he seems so lethargic which is not like him.
On top of that when I opened the front door he looked terrified, flew into another room under the table and wouldn't come out. Normally he is an indoor-outdoor puss so this is worrying me. If anyone can help I would be so thankful as I've only had dogs in the past and am not sure what to do with a cat.