Week 21

Second Trimester

Swallowing and Tasting

Baby is swallowing amniotic fluid and can taste its flavors — which shift based on what you eat. A reminder that nourishment is deeply connected.

This week's tip

💡 A pregnancy pillow can transform your sleep quality — even a regular pillow tucked between your knees and under your bump makes a significant difference.

Baby this week

🥕

About the size of

a carrot

Length

26.7 cm

Weight

360 g

Development

  • Baby swallows up to 300ml of amniotic fluid per day, supporting digestive development.
  • Taste buds are developed — baby may taste the flavors of foods you eat.
  • The liver and spleen are producing blood cells.
  • Bone marrow is beginning to take over blood cell production.
  • Limb movements are fully coordinated.

How you might feel

  • Your appetite may increase noticeably.
  • Leg cramps and hip pain are very common.
  • Some women notice Braxton Hicks contractions — painless tightening of the uterus.
  • Sleep can become more difficult to find comfortable positions for.

Things to do this week

  • Eat a varied, nutrient-dense diet — flavor variety now may influence baby's palate later
  • Use a pregnancy pillow for better sleep comfort
  • Begin pelvic floor exercises if not already — they benefit birth and recovery
  • Explore cord blood banking options if you're interested

When to contact your care team

This is general guidance, not medical advice.

  • Contact your care team if Braxton Hicks contractions become regular, painful, or more than 4 per hour.

Partner tip

Cook a variety of flavorful, healthy meals together — it benefits baby's palate development and is a lovely shared activity.