The weight of pregnant women in the second and third trimesters is about 5-6kg each, that is, about 0.4kg per week. The weight gain of pregnant women in the second trimester is mainly caused by maternal physiological changes, including the increase of blood volume, uterus, breast and related tissues. Main height 170cm, weight 48-49kg, body mass index less than 18.5kg/m? The weight gain during the whole pregnancy should be around 12.5- 18.0kg, and the weight gain at 32 weeks of pregnancy is about 5kg, plus the next 4kg, so the weight gain during the whole pregnancy is about 9kg, which is obviously less than the weight gain of 12.5kg. However, the normal fluid weight of the fetus is increased and the fat is stored.

The pre-pregnancy MBI index is lower than 18.5, and it is reasonable to gain 25 ~ 36 kg during the whole pregnancy. The pre-pregnancy MBI index is between 18.5 and 24.9, and the weight gain during pregnancy is between 23 and 32 kg. Generally speaking, in the last two months, expectant mothers gain at most 1 kg per week, which means that the weight gain in the last two months of pregnancy will not exceed 8 kg, but in fact, the weight gain of expectant mothers is different. A person with normal weight can gain weight by 1 1.5- 16kg in the second trimester of pregnancy. Under this normal body mass index, the normal body mass index is 18.5-24.9, while your height is 170, and your current weight of 32+2 is only 53kg.

Women still care about weight. Although weight gain during pregnancy is normal, it can't be irregular, and weight is also related to the health of the baby in the belly, so we should pay attention to the change of weight. In the last two months of pregnancy,

Weight gain will be faster in the last two months of pregnancy, which should be controlled at 1 kg per week, and the total weight gain in the last two months should not exceed 8 kg. Generally speaking, you should gain weight 10- 13 kg throughout pregnancy. If you are thinner before pregnancy, you can gain more weight on this basis.