I put on 4kgs. My pre-pregnancy weight was around 48-51kg. I only really gained the weight of my daughter and placenta and fluids, she was 2.9kg at birth.. so when she was born I was back at my normal weight, which was good (as I didnt have to stress about losing it) and bad (because I continued to lose more weight breastfeeding). I had horrible morning sickness up until 13 weeks where I could barely eat anything so I didnt put on any weight at all till about 25weeks. After m/s stopped I just ate whatever I wanted but I kept active too.

Everyones different.. I was told to expect to put on around 17-20kgs.