Beware of gaining too much/not gaining enough weight!
Gaining too much weight during a pregnancy will make you susceptible to pregnancy induced hypertension. However, recent trends have been seeing mothers-to-be that are too slim. It is said that not gaining enough weight will result in not only a smaller infant but also makes you susceptible to lifestyle related diseases. In any case, weight control during gestation is very important.
How much weight gain is normal during pregnancy?
The weight a pregnant woman gains until birth mostly consists of the weight of the infant (fetus), placenta, amniotic fluid and blood. A newborn's average weight is approximately 3 kilograms. It is said that a mother-to-be's body stores up necessary nutrients for birth and breastfeeding during pregnancy as well. In recent time, weight gain calculated according to each individual's pre-pregnancy weight seems to be the most ideal.

Physical Growth & Development Guidelines:
8 - 10 months
These data of boys and girls height/weight are different from
Singapore rule. This is based on the Guidelines and Instruction for Maternal and Child Health in Japan.
Infants 8 - 9 months:
Infants will start to crawl
More babies will be able to crawl by this point.
Infants will be able to sit steadily by themselves and uses both hands to play.
Infants will know their names when called.
Their mimicking skills improve, and they will be able to copy actions such as hitting a drum.
Infants will cry or call out loudly when they want attention.
Important Tip for Mummies:
Infants will be more mobile with further development of their sitting and crawling skills.

For Boys
For Girls
Height: 66.5 - 76.2 cm
Weight: 7.0 - 10.9 kg
Height: 64.3 - 74.7 cm
Weight: 6.3 - 10.4 kg
Infants 9 - 10 months:
Some babies will start to pull themselves up into a standing position
Infants start to pull themselves up to stand.
They will now be able to enjoy playing by themselves.
Their fine motor skills will improve, enabling them to grab small items in their hands.
Infants will start to display separation anxiety towards their mothers.
Solid foods usually progresses to three meals a day during this period.
Important Tip for Mummies:
The love babies have for their mother increases, resulting in "separation anxiety". Make sure to reassure your baby as much as possible.

For Boys
For Girls
Height: 67.7 - 77.6 cm
Weight: 7.2 - 11.2 kg
Height: 65.6 - 76.1 cm
Weight: 6.6 - 10.7 kg