My cat has a ticking problem.. help please ?

Cats respond to pain and stress behaviorally. The sudden "ticking" could be a reaction to something that is causing her pain. Cats can also urinate inappropriately with urinary tract disease. It definitely sounds like she needs to see a vet. Also, make sure you have enough litter boxes in your house for 5 cats. You should have one litter box in your house per cat plus one, so a total of 6.