Week 20
The Sweet pea, full stem (~25 cm) marks the ladder's deliberate switch from bloom width to full-stem length. At the halfway point, “sweet pea” becomes both a flower and a name someone might already be carrying in their heart.
This week at a glance
Size
About 25.6 cm (10.1 in), head to heel.
The flower
Sweet pea, full stem (~25 cm) — this week’s plate, drawn at your baby’s scale.
You might notice
Sleep changes · Stretch marks · Bloating · Heartburn · New swelling
How big is the baby at 20 weeks?
About 25.6 cm (10.1 in), measured head to heel — the size of a sweet pea, full stem.1
The fetus is around 25.6 cm long, and measurements now shift from head-to-bottom to head-to-heel because the legs are easier to include. A white, protective coating called vernix now covers the skin.
20 weeks pregnant is how many months?
Week 20 falls in the fifth month of pregnancy. Weeks and months don’t divide evenly, and your antenatal care counts in weeks — so Zohra keeps weeks, and prints the month for the relatives who ask.
That puts you in the second trimester (weeks 14–27).
What might you be noticing?
Tiredness or sleep changes, stretch marks, bloating, and heartburn can continue. New swelling is also listed among possible symptoms; worth mentioning at your next visit.1
Choose a halfway keepsake: two photos side by side, a short letter, or a list of twenty small moments. Put scan questions and preferences in one note you can open quickly.
For the record: At the halfway marker, what feels longer, shorter, stranger, or more tender than you expected? — this week’s page in the app asks the same thing. All forty prompts are here.
Written from the sources above and checked against them. Not reviewed by a clinician — see the editorial policy. Zohra is a journal, not medical care; for anything worrying, talk to your midwife or doctor.