Hi all my cat Tiggy is 2 in June and until January this year had no health problems she is wormed up to date had all her vaccinations and has been neutred, but in January she started this cough so i took her to the vet for them to tell me it was an infection and that her throat was very inflamed they gave her an antibiotic injection and within a week the cough went and she was back to her normal self, then a month later the same thing happened again, we took her back to the vet and this time they said they would give her more antibiotics but a tablet form this time as sometimes the injection doesn't give its full course, again the cough went and she was fine,another month later the cough starts again, i looked up on the internet about allergies (she is an indoor cat)so decided to change her diet as before she gets the cough she gets constipated then has diarrhoea,we done the food change and she perked up no end in fact it was like she was a different cat however from Friday shes been coughing again her litter tray again has diarrhoea, she does go out in the garden occasionally when we are out there and eats grass but i thought that was to only clear the digestive system?Tiggy is a short-haired tabby so it cannot be furballs, i'm wondering if she may have IBS or maybe a bit of PMT can she still get that after being neutred?Has anyone else experienced these problems in female cats, i had a boy before who was very much a boy always getting into scraps and had no health problems, any advice would be appreciated, thanks x