Last year, my kidney counts were not good....my general practitioner called and told me to get to Mayo quickly....I was in "stage 3 kidney failure" -- long story short, my specialist there changed my "water pill" that I was on with my other blood pressure pills and everything went back to "normal" within a week! I panicked but was so thankful for the change....don't worry too much yet. It may be a 'simple fix' for you too. Best wishes!!!