:hug: I'm so sorry you're kitty is sick. Thank God, I've never had one with a bladder infection, but I think it's fairly common, and he should be ok soon.
My cats are my babies, and I'm always a basket case when one of them is sick. Hang in there. It'll be ok. I've used a product called Nature's Miracle on pee spots before, and it seems to work well. It may take a few applications, but it always got the smell out for me. I used it when I clean the litter boxes in between dirt changings.