I'm donating for you, Pat! I completely understand where you're coming from, as our previous cat went through the same thing. He kept getting bladder infections, and had trouble urinating. We spent far too much money fixing him up. The final(3rd) time, they took an x-ray and saw some type of lump on his bladder. He was 11. We don't have endless cash, so we made the terribly difficult decision to put him down. I still miss him. I even have a picture of him(Merlin) here in my office at work.
I want you to get your cat back. Cats are so great. We now have 2 1-year old kitties that are fun and loving. They, just like my awesome dog, make my days better. Especially on the ones where I feel especially crappy.
Clive sounds like a great cat. Good luck with everything.