Weight gain during pregnancy is natural and important for your baby's development. The recommended range depends on your pre-pregnancy BMI, based on guidelines from the Institute of Medicine.
Most weight gain happens in the second and third trimesters. In the first trimester, gaining 0.5-2 kg is typical. The weight includes your baby, placenta, amniotic fluid, increased blood volume, and breast tissue.
Every pregnancy is unique. These ranges are guidelines, not targets. Your midwife or GP can offer personalised advice based on your circumstances.