Cat urination problems

Hello, I have a British Shorthair who is 7 years old and weighs around 3.5KG. For the past few weeks she has been feeling the need to urinate excessively. She is still using the litter tray, so there doesn't appear to be a blockage. But she is very vocal, especially in the mornings. She tries to urinate on the bed or on clothes, and grooms herself excessively. I have never noticed this with my cat before. She was staying at a pet sitter for a few weeks, and when she came back I then noticed this. I took her to the vet a couple of weeks ago and she had treatment for a urinary tract infection. I was given antibiotics for her to be taken twice a day, a long with other pills for muscle relax, pain and inflammation. I also gave her kibble for urinary health. The problem appeared to go away. But now, after over one week, the same symptoms have returned again. Does anyone know what this could be and what could be done to cure it? Please let me know. I am very concerned for my cat. I look forward to hearing from you.

Hello - I am interpreting here that your cat is urinating a lot an inappropriately, not producing an excess of urine.  In the latter case, different investigation would be required, perhaps starting with a urine sample.  However, assuming the other;  self-grooming can be a sign of pain and everything you are describing could be consistent with a painful urinary tract, which explains the anti-inflammatories.  Have they finished now?  If your vet, in the course of their investigations, has proved that there is likely to be a bacterial cause behind this, then I can understand that appropriate antibiotics to the type of bacteria found might have been used.  However, this is in fact comparatively rare; it is now thought that most cystitis (bladder inflammation) is caused by a combination of stress and other factors.  Stressed cats are reknown for seldomn looking stressed; they do not wear their hearts on their sleeves like dogs do.  The placement of litter trays is thought to be very important for cats mental well-being for example, with experts reccommending at least one litter tray per cat with some spares, ideally not overlooked by humans.  Cats' relationships with their litter sites are delicate and visitors, new pets / inter-pet relationship changes, even placing a breifcase too close to a litter tray, can be enough to cause cystitis. Therefore it may be important to speak to a vet about the behavioural aspect of Feline Lower Urinary tract disease, in order to start to address any potential stress-related causes that your cat may be experiencing.  You can read abpit this in our blog.  Secondarily to this, vets may reccommend an inceased water intake and other dietary measures.  Feline bladder disease can be life-threatening so given that the syptoms have not gone away, please do get further help from your vet.