Hi Sherline,
Do follow what your Gynae say about your baby weight (on diet).
I don't remember where I read, either book or online, it say: for last trim. mummy every week put 500gm is normal, which = 2kg per month.
Since my last check up 25W, I have put on 2kgs in a month (29W). this Saturday go check doctor, wait and see what he says.
I have been watching my diet, quite closely, always eat whole meal bread, and unpolished rice (white rice contain high sugar). not too much fruit (fruit also contain high sugar), but lots of vegs & fish.
But still put 15kgs so far. >.< started with 50.5kgs, now 65.5kgs. so far so good. my Gynae so far haven't say I need to be on diet, and my baby weight is normal. But he told me eat more meat, less rice.