Around 7 months of pregnancy is the time when pregnant women gain weight most rapidly, with an increase range of about 6 kg. Generally, the weight gain should be 10-15 kg during the whole pregnancy. Due to the different eating conditions during pregnancy, the growth varies from person to person and there are some differences between different pregnant women, so it is normal to be slightly above or below the normal value, so there is no need to worry too much. If you are below or above the normal value, you need to increase or decrease the nutrition or control the weight gain in time. At this time, if the fetus is developing normally, the fetal weight is about 1300-1500 grams, and the weight of the fetus also varies from person to person. It is recommended that pregnant women do regular maternity checks, develop good eating habits and exercise properly.