All up I put on 15kgs in my whole pregnancy.

My Obs said that 2kg per month is normal. If you put on more then that in one month, anything over 2kgs is fat you are putting on.

I put on 3kgs in two of the months and 4 kgs another (the rest I put on 2kg or under). I lost 10kg in the first week, and sure enough, I am 4kg heavier then what I was before I was pregnant, and don't fit into my prepregnancy clothes, so I think there is some truth about it.