I too had only put on 1.5 kilos at 24weeks pregnant. I have now put on 8 kilos and I'm 34w. I even had my endocronologist tell me I didn't have to put on any weight. In effect telling me that I should be loosing weight as the baby gained weight, thus maintaining my pre-pregnancy weight. HA! Good luck lovey. So anyways, 8 kilos so far.