Sounds like you had a good fast Sabine! It is fascinating what the scale (and our body) get up to. It would be so amazing to be able to watch a documentary on your own body with the narrator giving us all the insights. "and here you see your cells were experiencing such and such because of the fast and therefore they hung onto some extra water - but this hormone increased over the next 13 hours and then your body let go and you lost 2.5 lbs ..." As much as we now 'understand' about how our bodies work they are still the most incredibly intricate and mysterious organisms and they are very good at keeping us guessing!
Start weight: 225.5 lbs Feb 13 2012. Height: 5'7"
Primal low: 186 lbs
Current weight: 218 lbs
S.T. goals: stabilize hormones, JUDDD, sleep early and long
LTG: Find my sweet spot with which foods work for me and start losing weight
Goal weight: 135 lbs
Just take it one bite at a time ...