I had my first STING/HIT operation to stop the reflux into my kidney about 2 years ago now. I'm starting to get water infection symptoms and I can feel it turning into pyelonephritis. How long did your valve implant work for? Did you need another round of surgery to fix the reflux again? I'm worried as my kidney is already quite damaged due to previous infections (functioning at 15%) and I don't want to do it any more damage. What should I do!?