Why Did I Peak?

Started the day off on a bad note, something possed me to step on the scale! WHY!? I know I shouldnt have done it but I did..it showed I was up 2.6 HOW IS THAT POSSIBLE!! REALLY?? So of course now I am just totally stressed out about weighing in on Saturday. It has to be water retention from something it really cant be gained weight? Guess we will find out for sure on Saturday! Today was a good day on points of course I was being extra cautious after seeing the scale. Got in a 25 minute walk and a intense 45 minutes speed drills on the treadmill. Hopefully from today and what I do tomorrow the scale on Saturday will be better!