I had missed 2 weigh ins (so 3 weeks) up until last Monday due to work and I actually felt like I had lost weight. My clothes felt looser and more importantly, so did my work uniform. However, at class, the scales showed that I had maintained.....for 3 weeks!!
I'm not really bothered to be honest. I know I have stuck to the plan and I know it will move eventually. Infact, what it has made me aware of is that I was getting in a bit of a rut with my foods and that I need to something about it!