Congratulations Claire, really hope all goes well.
Twinkle, don't get me wrong, as long as you are not over eating and are exercising then your stomach will flatten out and look lovely but a proper 'six pack' is far harder to achieve. Remember that the girls in the dvd are fitness models and make there money by looking like that.
I know nothing about ww but if it is working for you and you are enjoying what you eat then great! I have been reading more about weight training recently and how what you eat effects your workouts and the results that you see and have followed some of the basic principles.
Your dh sounds very sensible, definitely only weigh yourself once a month, or even better throw the scales away and have a good look in the mirror once a month at yourself and you will really see the changes, and more importantly think about how you are feeling compared with before you started exercising. Use these things to judge how successful your healthy living is as the scales often don't truly reflect that.
Don't feel guilty about having a 'bad weekend', this is life, you should be able to enjoy the odd takeaway, cake, night out etc without feeling guilty, it's just a question of going back to your good habits the next day.