How do you know if you cat has either a bladder or kidney infection?

My cat has very strong smelling urine, She used my bed for her litter box and it had this really bad odor, I know what cat urine smelles like but this was different. What are symptoms of a bladder or kidney infection and what can I do to help her?
So far I want to thank everyone for the answers. I know I need to take her to a vet and I plan on doing so on Monday, I'm asking this question just for info.
AND BTW MY CAT IS FEMALE NOT MALE

Hi Nicky…generally, when cats inapropriately soil outside of the litterbox it is a sign if a feline lower urinary tract infection (FLUTD):

Symptoms of an UTI:
- bloody urine
- straining to urinate (can easily be mistaken for straining to defecate)
- urinating in unusual places
- urinary blockage (almost exclusively a male cat problem)
- licking the urinary opening (usually due to pain)

Here's an article about Feline UTI which talks about blood in urine as well: http://www.marvistavet.com/html/body_feline_lower_urinary_tract_dis.html

Causes of UTI: http://editorials.arrivenet.com/education/article.php/6088.html

Cornell University College of Veterinary Medicine on house soiling problems: http://www.vet.cornell.edu/fhc/brochures/housesoiling.html

Consider ringing your vet to have a urinalysis or blood work drawn to evaluate if she has a urinary infection as soon as possible.

Other posts:

Related posts:

  1. How do you know if you cat has either a bladder or kidney infection?
  2. Can Clindamycin be used for male cats bladder infection and how many milligrams for a 20 pound cat?
  3. Cat Care & Sick Cats : Cat Illnesses
  4. Cat Care & Sick Cats : Cat Illnesses
  5. Why is my cat throwing up after just getting over a bladder infection?