31 Weeks Pregnant: Baby Size & What's Happening

At 31 weeks, the baby is about the size of a Chinese cabbage — roughly 41 cm (16.1 in), 1.5 kg (3 lb 5 oz). What's happening, and what the partner can do.

All five senses are working at once.

About the size of a Chinese cabbage — or a pine marten, or a stollen. 41 cm (16.1 in), 1.5 kg (3 lb 5 oz).

What's happening this week. Every sense is now up and running, and the brain is making connections at an extraordinary rate. Amniotic fluid is at its fullest — plenty of room, for now.

All five senses working. Brain connections forming fast. Amniotic fluid at its peak.

The baby can now process information from all five senses at the same time.

What your partner can do this week: Fit the car seat and practise taking it in and out. Go through the birth preferences together, so you can speak up for them if your partner wants you to. Make a plan for how you can be reached quickly at work from now on.

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