If you are being obsessive, then I fear that most of us on FS are as well....my experience says that a new lower number is not a fluctuation but a loss....I consider a fluctuation to be when the number goes up for a day or so....not sure I really know what I am talking about but it has made me less crazy at times. You are doing great so try to relax and enjoy the wonderful feeling of feeling thinner, sexier, and happier....