Women usually gain 7-8 pounds in the 5th month of pregnancy, and the normal range of weight gain for women throughout pregnancy is about 20-24 pounds. The specific situation of each pregnant woman is different, and there will be the following differences in weight gain during pregnancy: 1, women who are thin before pregnancy: some women are thin before pregnancy, they need to try to add more nutrition, and they can gain more weight during pregnancy to ensure the nutritional supply for the growth and development of the fetus, and they may gain more weight during the 5 months of pregnancy; 2, women who are fat before pregnancy: some women are pregnant Before more fat, weight belongs to overweight state, after pregnancy it is recommended to control weight gain, avoid weight gain too fast, so as not to endanger health. Women who gain weight too fast and too much in the fifth month of pregnancy are prone to gestational diabetes, which will not only damage the health of pregnant women, but also affect the growth and development of the fetus, which may lead to overdevelopment of the fetus and even the formation of a huge baby, increasing the difficulty of normal delivery and even difficult delivery. Therefore, women who are fat before pregnancy are recommended to control their weight appropriately so that their weight gain may be relatively reasonable in the 5th month of pregnancy and throughout pregnancy.