Second Trimester

Pregnancy Week 20

Your baby is about the size of a banana 🍌 — halfway point!.

Week 19Week 20 / 40Week 21
🍌

Size comparison

≈ Banana

Length

25.6 cm

Weight

300 g

Milestone

Halfway point!

About 20 weeks to go until your due date (week 40).

Baby's development at week 20

You're at the halfway point — 20 weeks! From now on, baby length is measured head-to-toe. Your baby swallows amniotic fluid, which is practising the digestive system. Movement is regular.

Celebrate this milestone — you're halfway there! Share a kick count moment with a partner.

Common symptoms at week 20

Definite kicks and fluttersShortness of breathIncreased appetite

Eat more of

  • ✓Omega-3 fatty acids (salmon, flaxseed)
  • ✓Calcium & Vitamin D (cheese, eggs, sunlight)
  • ✓Protein (chicken, legumes, eggs)
  • ✓Iron + Vitamin C together for absorption
  • ✓Magnesium-rich foods (nuts, seeds, dark chocolate)

Foods to avoid

  • ✕Alcohol
  • ✕Raw/smoked seafood
  • ✕High-mercury fish
  • ✕Unpasteurised cheeses (brie, camembert)
  • ✕Processed meats (deli cuts, hot dogs)
  • ✕Excess sugar

Medically reviewed by First OPD Medical Team. Last reviewed on .

Based on average milestones from World Health Organization (WHO), ACOG, NHS UK. Educational only — not a substitute for personalised medical advice.

Track every week with a free First OPD account

Save your personalised week, get your due date, and book gynaecologists near you.

Browse pregnancy week by week