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Weight Gain In A Multiple Pregnancy


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How much bigger will my bump be carrying twins?

The size of your bump is not the only difference between carrying one baby and carrying two, but it is a big difference. By the time you’ve reached 28 weeks you are likely to be the same size as a woman carrying one baby to term at 40 weeks. By the time you’ve reached full term the inner volume of your womb will be almost 10litres, double that of a woman carrying a single baby.

How much weight will I gain carrying twins or triplets?

As with single pregnancies, weight gain for twins and triplets will vary from one pregnancy to another and will depend a lot on your size before you conceived. For twins and a multiple pregnancy, a recommended weight put on by 24 weeks is around 3½ stone, and for triplets it’s over 4 stone.

Why am I more likely to get anaemia carrying twins?

With more than one baby developing so rapidly inside you, your folic acid, vitamin and iron reserves will be depleted faster, making anaemia more common in multiple pregnancies. Your iron levels will be tested during routine antenatal blood tests and your midwife can advise you on the right treatments for anaemia. If you do need to take iron supplements, take them with fresh orange juice, rich in vitamin C, which is known to help your body absorb iron.

Taking folic acid and prenatal vitamins is important for every pregnancy, but even more so for multiples, so make taking pregnancy supplements part of a daily routine.

Dr Carol Cooper, GP

Author of Twins and Multiple Births

All information used in this article was sourced from:

Cooper, C., 2004. Twins and Multiple Births. 2nd ed. Chatham: Vermilion

10681 Revised November 2012

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