In January 2012 my gfr was 29. My nephrolgist said the problem was I was taking diclofenac and once this was stopped I went up to 47. The next time I saw him it him it was 36. Then after Christmas it went down to 32. I had been suffering from diarrhea for 6 months and thought this was the problem. 2 weeks after my 32 reading I had another blood test and My gfr was 40. I am really concerned that so many things can affect your kidneys. I see my Neph in 5 months but am worried my gfr could decrease again and I would not know about it. Has anyone else had this sort of problem?