Can anybody advise? About 3weeks ago, my little 3yr old female developed a dirty bottom. The vet thought it was diahorrea so given baytril and probiotic. She began eating again but the dirty bot got worse and we realised she was lifting up her tummy every time she peed and squeaking in pain. The vet then said it was a bladder issue and gave her an anti inflammatory injection. This helped a bit for a few days but then wore off and things got worse again. She is losing weight and after a second injection this week, has been miserable. I have bathed her bottom area a few times, but she hates that. Her fur is now falling out from the area. How do we know if it's an infection or stones and what else can we do? The vet mentioned X-rays for next week and a bladder operation but then added in that he'd never operated on a GP before. Is it worth trying a different antibiotic? If it's stones can ultrasound not be used? Has anyone experience of this? Thanks.