Firstly congratulations on your impending motherhood!!!
I broke all the rules as far as weight gain goes. I am tallish around 60-64kg pre pregnancy and gained 27kg with my first and 22kg with my second. By the second trimester I had already gained about 8kg with each but I think it had something to do with the fact that the only way I could stop feeling sick was to eat. With this pregnancy so far I have gained about 4.5 kilos and am nearly 12 weeks.
With my first a couple of days after the birth I had lost 10kg. I was told my weight gain was mainly fluid as I was very swollen through the last trimester. Both my bubs were nearly 3.7kg.
Both my babies were measuring about 1 week ahead for my dates and they ended up slightly above average in size. It doesn't necessarily mean you will have a huge baby.
4 lovely munchkins DD 10/03, DD 03/05, DS 10/06 &