Nina,
I was excersising before i fell preg i had lost 7 kgs, i have now put that back on and added some more. I was going so well, But we did plan this pregnancy so i guess i cant really complain. I am shortish (well i think anyways) 155cms and i am up to 70kgs.
I went from 81kgs with DS2 when preg to 70kgs the day after having him. So dont stress.. It DOES come off!!