Hi, its awful i know lovey but i totally agree with everyone else. You will be fine. My surgeon is really strict, he told me to lose 10lb before my next opp back in April, but my body decided to put 10lb on because i went on holiday Lol. He wasnt to pleased with me and i was petrified that he was going to refuse me the op. He then sent me home packing and demanded that i lose 1 stone in 4 weeks Lol. I lost 18lb on a starvation diet but he was well pleased with me, told me not to put any weight on and try to lose more, and then i was put on the waiting list. I went for my pre op last Wed and made myself ill all week because i thought i had put weight on, well according to my scales at home, but when they weighed me i had lost another 5lb i think it was. Anyway the moral to the story is like everyone else has said is all scales weigh different, just like getting weighed at different times of the day does, so please dont worry.
One thing my pre op nurse told me was that if when he takes me down to theatre and my liver has not shrunk because i have not followed the milk and yogurt diet then he will not be able to operate and i will get sent home and will have to go through the whole referral malarki again, so whether you lose weight or not lovey, your liver will have shrunk so your surgeon will know. Good luck x