She’s 13 years old and just started peeing in small portions around the house. We shined a flashlight on it and saw it was red. Then about 10 minutes later, we noticed blood clots.
Oftentimes when a cat seems to be unable to hold the urine in, it’s because they cannot urinate properly and what seems like urinary incontinence is actually a blockage. The most important thing in this situation to make sure your cat is still able to urinate, so be sure to check the litter box for signs that urination is still occurring in normal volumses. If you notice that your cat is not able to pee and just dribbling urine, there could be a blockage. Here is an article talking more about what might keep a cat from peeing:
Not being able to urinate can quickly become a clinical emergency and you should visit a veterinarian to get the appropriate treatment straight away.
If your cat is urinary incontinant and is able to urinate normally, but just dribbling urine, you should still visit a veterinarian to help find the source as it is likely very uncomfortable and could still be something serious that needs to be addressed. It could be something known as feline idiopathic cystitis (FIC) which is when the bladder is inflamed, there could be stones in the bladder, a urinary tract infection or a number of other conditions. A veterinarian can help you through a good physical exam and having trained palpation of the bladder. They can also run tests on the urine to help find the root cause and help provide medications to help with the comfort of your cat and to help treat the underlying condition.