WEEK 19 / 40 · Trimester 2

Pregnancy Week 19

🧅 Size of a Onion

About 21 weeks until birth

Pregnancy week 19 baby size: Onion
15.3 cmLENGTH
240 gWEIGHT
🧅ONION

Touch, taste, smell, sight, and hearing senses are being mapped to separate brain regions.

What's Happening With Your Baby This Week?

  • A white, waxy layer called "vernix caseosa" is coating the skin to protect it from amniotic fluid.
  • Specialized brain regions for each of the five senses are differentiating; each sense is building its own neural network.
  • The kidneys are working; the urine they make is an important source of amniotic fluid.
  • Permanent tooth buds are beginning to form behind the baby tooth buds.
  • In baby girls, the ovaries contain approximately 6 million primitive egg cells.

This Week's Tips for Mom

  • You may experience leg cramps; they can be especially common at night.
  • Balancing your salt intake and drinking at least 2.5 liters of fluids daily will do you good.
  • You can start using a pregnancy support pillow to ease hip and back pain.
  • You may notice skin changes (dark spots, melasma); using sunscreen is very important for your skin.
  • You might consider scheduling your week 20 appointment for the detailed ultrasound (anomaly scan).
Tip of the day: Gentle calf stretches before bed can help prevent nighttime cramps; if you're considering a magnesium supplement, check with your doctor first. Pulling your toes toward you to stretch the calf muscle can provide quick relief during a cramp.
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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