19 WEEKS PREGNANT
A protective waxy coating starts forming on the skin
Baby this week: about 15.3 cm — crown to rump · about 240 g
≈ 15.3 cm — about the size of a tomato
Illustration enlarged for clarity — the amber marker shows true relative size
Your baby this week
- Vernix caseosa, a waxy protective coating, starts forming on the skin
- Brain regions responsible for the five senses are developing rapidly
- In female fetuses, the uterus and ovaries have formed, and egg cells are already present
- Arms, legs, and body proportions are becoming more balanced
Your body this week
- The belly is often clearly visible by now, and movement may be felt more consistently
- Stretch marks can start to appear on the belly, hips, or breasts as skin stretches
This week's tip: Moisturizing regularly can help with skin comfort, though it won't necessarily prevent stretch marks — genetics play a big role too.
Want the bigger picture — organ development, nutrition, scans and warning signs for this stage? See month 5: The month of first kicks.
Sizes and milestones are typical ranges — every pregnancy runs on its own clock. Educational content; your prenatal care team's guidance always comes first.