Don't worry hun. Whatever diet you are on, the closer you get to goal, the harder it is to lose the weight. I know it's dis-heartening but just stick at it. The weight is coming off so you must be doing something right. Don't forget about monthly fluctuations in water retention, etc that can make us vary by several pounds. Oh and the muscle you are gaining from exercise. Don't just use the scales. Use a tape measure and how your clothes fit.
If it's any consolation, I have found that when I am in my 25s on the BMI scale, my body seems intent to hold onto every bit of fat it has left! It seems like my body is happier with itself than I am with it! Haha! I have a stubborn half stone to a stone that I would love to shift (seems to be mostly on my thighs and bum) but I go through this constant lose a few pounds/gain a few pounds scenario. It's kept me a healthy BMI for quite a while but it does get me down because I desperatley want to sort my thighs and bum out!!!
I'm just finishing off some Cambridge Diet shakes I have left from autumn (not to go into ketosis - just to replace breakfast and lunch) and then I'm going to give Slimfast a go because saw it on special offer in Tesco. I prefer the taste of CD but they cost too much for me at the mo.
Good luck anyway hun. Just keep up the good work and don't let a couple of low weight loss weeks put you off. Next week your loss might be greater.
xx