As long as you are sticking to plan 100% and drinking all of your water, you are not going wrong, you can never tell what your body is up yo, but stick to it and you WILL get the results you want!
Do you have much to loose? Since if you don't you may get much slower losses, and see very little change on the scales day-to-day - I'm having this problem at the moments, it is demoralising, but as long as you know you are sticking to it, it'll happen soon.