I am sorry to hear about Daffy's problems. My name isXXXXX am a veterinarian, and will do my best to help.
If she has blood and mucus in her stools, it sounds like she has colitis, inflammation in her intestines.
This can be cause by many things; food sensitivities, inflammatory bowel disease, infections, parasites, pancreatitis.
The once a month wormers will get some, but not all parasites. For instance, if she has Giardia ( not a worm, but a one celled parasite) or Coccidia, she would need special medication for that parasite.
I usually start by looking at the stool under a microscope and testing for things like Giardia and Coccidia. I try a bland diet like Royal Canin GI or Purina EN or Hills I/D.
Probiotics, beneficial bacteria supplements, like Fortiflora and Proviable can be helpful. These are made just for cats, and are better for cats than probiotics for people, or yogurt.
A medication called metronidazole can be very good for colitis.
I am not seeing responses from you. I hope you see what I am writing!
When a cat eats less, they are telling us that they do not feel good. Is she losing weight at all? Does she vomit at all?
I will try to connect with you another way, if I do not hear from you soon.
Daffy has sometimes vomiited, but it is not as often as the bloody stools and feces.
She is not losing weight but then again she has always been slim. she weighs 2kg.
the medicine which you have said- metronidazole could i get that from a vet without taking Daffy in?
Ok, Thank you so much I can now move forward and make an appointment with the vets and try and get Daffy better.
The information you gave was very informative and detail thank you.
just last question will the treatment b lengthy and expensive? or is it quite straight forward i.e no stay in hospital?