I have a 12 year old female that is an indoor cat that we have had for about 7 years. She had a UTI about 5 years ago, but it cleared up with Antibiotics within a week and she has been the picture of health since. We noticed her going in and out of her litter box and struggling to pee and leaving very little in the box about 12 days ago and got her into the ER vet. She was given a shot of Covenia along with a steroid and pain shot. We noticed improvement in about 4-5 days and thought she was on her way to getting better. Then within 9 days of her initial treatment it came back with a vengeance. We had her back at the vet and he did X-rays and found no blockage and did blood work and showed no signs of kidney issues. He gave her another shot of Covenia and put her on an additional antibiotic pill called Zenquin. She has 2 more days of pills and it has been 5 days and not seeing any improvement. I welcome any input or thoughts from anyone that has experienced this or can help