Baby development at week 30
Vernix and lanugo may begin decreasing for some babies. Soft nails are present. The brain’s surface starts more complex folding.
Average size estimates for week 30 are about 39.9 cm and 1319 g — roughly cabbage. Your ultrasound report and clinician’s dating override any website average.
What you might feel
Heartburn and bathroom trips increase. Eat smaller evening meals if reflux wakes you.
You are in the third trimester. Two pregnancies at the same week can feel completely different — treat these notes as orientation, not a checklist you must match.
Movements in week 30
By now, many clinicians encourage intentional awareness of fetal movement. Learn your baby’s usual active window, then use Preglo’s kick counter to log a calm session. Read how to count baby kicks if you want a simple method, or the 10-kick count overview. If movements feel clearly reduced, contact your care provider — see reduced fetal movement.
What to track this week
- Symptoms, mood, sleep, and energy in your daily log
- Water intake toward a simple daily goal
- Appointment dates and questions for your care provider
- Scan dates and follow-up notes after ultrasound visits
- Kick sessions once movements feel regular — same time of day when you can
A calm next step in Preglo
Track water even when you feel “full” — dehydration can worsen headaches and Braxton Hicks for some people.
Also useful: due date calculator · all weeks · Preglo features
Nearby weeks: Week 28 · Week 29 · Week 31 · Week 32
Educational averages only — not medical advice. Contact your clinician for symptoms that worry you, bleeding, severe pain, or reduced movements.