Hi, I have put on 9 kgs and am in 20th week. I put on roughly 20kgs with all my kids(1boy,2girls). I guess it depends on weight when u get pregnant, age etc. For me anyway. Due to back problems Im hoping to only reach 13-15kgs by due date. I try and eat well, but I do give in to carvings(LOL). I guesss if youre worried about weight talking to ob/midwife might help.