Baby development at week 20
Week 20 is a mental milestone. Baby swallows amniotic fluid and practices digestive motions. Movements become more organized and easier to recognize for many parents.
Average size estimates for week 20 are about 16.4 cm and 300 g — roughly banana. Your ultrasound report and clinician’s dating override any website average.
What you might feel
A visible bump is common. Heartburn or constipation can show up as the uterus rises.
You are in the second trimester. Two pregnancies at the same week can feel completely different — treat these notes as orientation, not a checklist you must match.
Noticing movement in week 20
Flutters often become clearer around mid-pregnancy, though timing varies widely. You do not need a formal count yet for every pregnancy — casual awareness is enough. When patterns feel regular later, Preglo’s kick counter is ready without a separate app.
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
A calm next step in Preglo
Start noticing movement patterns casually now — later, Preglo’s kick counter turns that awareness into a calm habit.
Also useful: due date calculator · all weeks · Preglo features
Nearby weeks: Week 18 · Week 19 · Week 21 · Week 22
Educational averages only — not medical advice. Contact your clinician for symptoms that worry you, bleeding, severe pain, or reduced movements.