I'll let you all know how his visit at the vet goes tomorrow. He's been so lethargic all day, he's also been friendly which is usually a red flag. Today he sat on my lap and took a long nap on me when I was watching tv, that very unlike Corkscrew and usually a sign that he's not feeling well. So hopefull whatever it is isn't too serious and can easily be fixed with some antibiotics.