Weight gain in pregnancy varies from person to person. It also depends on your weight before you become pregnant.
Most pregnant women gain between 10kg and 12.5kg (22lb to 26lb), putting on most of the weight after week 20. Much of the extra weight is due to your baby growing, but your body will also be storing fat, ready to make breast milk after your baby is born.
Putting on too much or too little weight while you're pregnant can lead to health problems for you or your unborn baby. But don't worry, it's easy to make healthy food choices. Find out what to eat when pregnant and what foods to avoid.