Ellie, my loss was after piling weight back on again, so was mainly water. I don't expect to carry on like that - half a pound a week will do me, as long as I can carry on losing a little bit consistently then I'll be happy.
Try not to get too bogged down by exact weights week on week. A downward trend is better than huge weight losses every week - it's easier to sustain, plus it's more likely that you'll keep it off.
Think positive ... you've made the first step, that has to be a good thing.
Anyway ... where's my evil twin Sue? She had me sniffling again with her thread about Daniel the other day, and I wanted to say how fantastically I think they're both doing. Even if she is a Jane Eyre fan ...