Hi Sarah,
I understand exactly what you are going through! I had a low first week, and am due for my second weigh in today and I am almost 100% sure I haven't lost a thing. I've checked my scales and they haven't budged all week. I feel like I'm doing things right, as i'm not eating, but for some reason, I don't think I am as I am not losing... I will as you, keep at it, as I think it must be impossible to not lose weight on this diet, as you aren't eating but it does get me down and I can definately understand where you are coming from. I sometimes think, what is the point? But let's keep at it, and see where it takes us! Sorry, that was a bit long!! Good luck!!