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PREGNANCY WEEK BY WEEK

25 weeks pregnant

About the size of a cauliflower

34.6cm and about 660 g

This week

Learning to breathe before there is air.

  • Lungs getting ready
    The lungs begin producing surfactant, the substance that will let them open with the first breath.
  • Responding to sound
    Loud sounds and music can now get a response: a kick, a startle, a wriggle.
  • Nostrils open
    The nostrils, sealed until now, open up and the baby starts practise-breathing amniotic fluid.

Written against the NHS week-by-week guide. A picture, not a measurement: every baby grows at their own pace.

THIS WEEK’S QUESTION, FOR THE TWO OF YOU

“What do you imagine about the first time you hold the baby?”

Every Sunday, Syncry asks you both one question like this. You each answer in your own words, and the answers become your book.

Get next Sunday’s question

Your first month is free. No card needed to start.