water retention masks fat lost. I am one to weigh every day because I find that being aware of the simple ups and down my body goes through makes me appreciate the losses and not get overwhelmed with gains because I know it's cyclical. What has probably happened is your body is retaining water and trying to readjust in this "down time." It goes through a similar adjustment when you begin to exercise more than usual. My body is a big "adjuster," it wants to sit at a weight for awhile, bounce around in that area, feel the space out, get cozy, and then its ready to lose again.
i recently started doing yoga every single day and I was still plateaued, still plateaued and then in the past couple of days I've shed four lbs of water.
It's up to you whether you think seeing weight fluctuations is overwhelming, or if it helps you to kind of get in tune with the science of your body. For me, better understanding brings greater peace.