Congratulations - you're now coming into the last trimester of your pregnancy.  Your baby will be moving about lots and no doubt you've felt a few kicks!  By week 28 your baby will be perfectly formed but still quite small.

Weight gain in pregnancy

Everyone’s bump is different!  The amount of weight you gain during your pregnancy will differ from other pregnant women.  The extra weight is a combination of increased body fat (in preparation for breast feeding), the baby, placenta, amniotic fluid and increases in maternal blood and fluid volume.  You usually gain most weight during the last trimester of your pregnancy when the baby is growing rapidly.
The most important thing is that you do not gain too much weight during pregnancy as this increases your risk of complications during pregnancy (e.g. gestational diabetes and high blood pressure) and childbirth.  Also, if you put on excess weight you are more likely to retain these extra pounds after child birth.
Your doctor and midwife may monitor your weight during your pregnancy.  As a guide, if you are a healthy weight (BMI 18.5-25) before pregnancy then you should put on between 11 and 16 kg over the course of your pregnancy.  If you were overweight (BMI 25-30) or obese (BMI >30) before you became pregnant then it is recommended that you put on less weight.  The table below will give you an idea of the appropriate amount of weight gain for you during your pregnancy, but the figures below are only guidelines. If you are concerned that you are gaining too much or too little weight then talk to your midwife.

Recommended total weight gain during pregnancy, based on pre-pregnancy BMI (Institute of Medicine, 2009)

 Pre-pregnancy BMI (kg/m2)   
Total weight gain range (kg) 
 less than 18.5 (underweight) 13-18
 18.5-25 (healthy weight)
 25-30 (overweight)
more than 30 (obese)

To avoid putting on excess weight during pregnancy, make healthy food choices, do physical activity regularly and don’t fall into the trap of thinking that you need to eat for two.
If you do have pounds to lose, make this a goal for after child-birth and work hard to achieve this before you try for another baby.  It is important that you do not diet to lose weight during pregnancy, as this may harm the development and health of your baby.


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