I weigh myself several times a day, mostly out of curiosity. It hasn't affected me emotionally, so I'm okay with it. Things I've noticed. Sometimes I weigh more in the morning then I do in the middle of the day - weird (last night's dinner maybe?). My weight can fluctuate as much as 4-5 pounds through the course of a day due to water, salt, food, gravitational pull, whatever. I usually am at my lightest weight after a mid-afternoon nap on the weekend, which is doubly awesome (rested and lighter). There are cycles that I've noticed that may or may not be unique to me. Some of those are the typical C and TOM issues, and others are calendar, stress, and food-related. Like someone else mentioned, even if I was 100% OP, stress made me hold on to weight. Also, sometimes, it can take up to 3 days for an off-plan choice to register on the scale. Whatever the case, I hope that the scale is kinder soon.
P.S. Even when the scale goes up, sometimes the inches go down.
Thanks for the reminder about your PS! So true! Need to keep that in mind!