It is disheartening when the scales don't show a loss, have you been measuring at all? The inch loss on this diet is amazing, in 5 weeks I have lost 15 inches.
Don't be disappointed with a 3lb loss, after all a loss is a loss! Also about periods, I have the Mirena Coil and after no periods for a few months I had one in my first week on cd then one last week, it was horrendus and made me crave food really bad so much so that I had a blip and I ended up putting on 1lb, but I still lost 3"! Apparently its just a side effect of the diet, not a nice one granted!
Look at your body rather than the scales hun, if the scales read the same but your clothes are getting looser, what is there to be disappointed about? x