Good luck! Hope you can find a cure. If all else is ruled out, I have heard and Lexy's breeder did also mention that he sees incontinence quite a bit in older spayed bitches. Personally Lexy is my first unaltered bitch, and I've never had that problem with my other dogs, I have a 7 year old spayed bitch now (mutt) no prob's. But I'm know my breeder has seen alot more dogs in his lifetime then I have.