Isabelle was the queen of UTIs when she was a puppy. It got to the point of where I'd call the vet and tell them she was sympomatic and I'd drop off peein the am. That afternoon I'd pick up antibiotics. She was numerous rounds of antibiotics when she was a puppy and different ones. Can't remember now which ones, but I'd probablly recognize the names. I'd get a second opinion. utis can be painful - she needs meds. They can go up into the kidneys and really cause problems. I don't know about the spayed thing. Isabelle was spayed around 6 months - she has had utis since then - one was last novemberish. They have been much less frequent but she is also on phenopopaline (sp?) commonly refered to as pp pills for incontinance. Hope that helps a bit - but I'd definately want another opinion.