WEEK 12 / 40 · Trimester 1

Pregnancy Week 12

🍋 Size of a Lime

About 28 weeks until birth

Pregnancy week 12 baby size: Lime
5.4 cmLENGTH
14 gWEIGHT
🍋LIME

You're successfully completing the first trimester!

What's Happening With Your Baby This Week?

  • The kidneys have started producing urine; the amniotic fluid is constantly being renewed.
  • Completely unique fingerprints are forming; they will never match any other person in the world.
  • Vocal cords are beginning to form; the foundation for baby's first cry at birth is being prepared.
  • Reflexes are very active; fingers close when touched and toes curl.
  • Bone marrow is beginning to produce white blood cells; the foundations of the immune system are being laid.

This Week's Tips for Mom

  • It's time for the nuchal translucency ultrasound; it's recommended between weeks 11-14.
  • It's the perfect time to share the wonderful news with loved ones; the risk of miscarriage drops significantly after this week.
  • Your nausea may start to ease; try to make healthy choices as your appetite returns.
  • Your belly may start to become slightly visible; it happens at different times for every woman, don't worry.
  • You can start taking weekly belly photos or keeping a pregnancy journal to capture memories.
Tip of the day: Getting used to sleeping on your side (left or right, both are fine) can be beneficial; in later weeks, lying on your back can press on the vena cava (main vein). Placing a pillow between your legs can make this position more comfortable.
This content is for informational purposes only and is not a substitute for medical advice. Length and weight values are averages; every baby grows at their own pace.

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