For the last 2 days, my cat has been constantly urinating. She is literally going to the cat litter tray every 20/30 minutes and urinating, and then gets out and licks herself. What do you think is wrong with her?
The behavior you describe is most often a symptom of a cat urinary tract infection or inflammation. You said "she" and so I assume the cat is indeed a female. Male cats can become totally obstructed and need immediate attention or they will die.
Even though it is rare for a female cat to obstruct, she still needs to be seen by a veterinarian. They will analyze her urine to see if she has a feline bladder infection, inflammation, excessive urinary crystals, etc.
X-rays may also be recommended to find out if she has stones in her bladder or kidneys.
Your cat's behavior illustrates that she is feeling very uncomfortable and would appreciate being treated by a veterinarian as soon as possible.
Thank you for writing,