Be sure the litter box is clean.
Be sure the litter box is clean.
I had a cat that would go outside the box too if it wasn't up to his standards. He also had IBS and would throw up sometimes.
The UTI should clear up soon enough. I have a dog that has had a quite a few of them. A few things I would add is that if they can smell the pee maybe the cat is behaving like a dog. And going where they went last. Go to the pet store and try some of that cleaning stuff to get rid of pee odors. Just becuse you can't smell it doesn't mean the smell is gone. Also my cat became diabetic and started to pee up a storm. Hopefully since your cat is so young that isn't what is going on here.