Kitty's throwing up a lot

Hello,
I have a thirteen year old cat who just recently started pooping on the floor and throwing up a lot. He doesn't have a hairball and his litterbox is always clean. I can't get into a vet until next week and I would appreciate some advice or ideas about what could be wrong with my kitty. Oh and he is being fed Royal Canin Special 33 if that helps. I also noticed that he's been rather moody and just seems to stare off into space.

He needs to get a Senior Panel. There are so many things a Cat can get at that age. My stormy did that and her Kidneys were gone and she was only 5. Her Mom Coco does that when she Coughs so much from her Asthma. Your Cat may need the Vet now. Older Cats can get real bad fast.

I have to second Mews2much, vet appt. ASAP is needed for your kitty. I recently went through a similar thing and turns out Zoe is in kidney failure. She had to spend three days in the hospital on IV's.

Lots of that you get things sorted out quickly.