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Pregnancy Guide·Second Trimester

Week 22: Rapid Growth

Papaya (~19cm crown-rump)·Last reviewed: 25 April 2026
Quick answer

At week 22, your baby has fully formed eyebrows and eyelids, and has settled into a regular sleep-wake cycle. According to Nuhah's pregnancy guide, the lungs are developing surfactant - a substance needed for breathing after birth.

Baby development at week 22

Eyebrows and eyelids are fully formed. The baby has a regular sleep/wake cycle - you may notice patterns in when they are active. The lungs are preparing to develop surfactant (a substance essential for breathing air), with production beginning around weeks 23-24. The baby's sense of touch is well developed, and they may grasp the umbilical cord. The skin is wrinkled and translucent but will fill out as fat deposits increase.

Your body this week

Your bump is now clearly visible and you may start receiving comments and questions. Backache, leg cramps, and swollen ankles can become more frequent. Some people develop hemorrhoids due to increased blood volume and pressure. Braxton Hicks contractions (practice contractions) may begin - they feel like a tightening across your abdomen and are usually painless.

Things to do this week

1
Start thinking about your birth preferences
2
If you have not already, begin researching feeding options (breast, bottle, combination)
3
Consider starting a baby essentials shopping list
4
Register for antenatal classes with the NCT, NHS, or private providers

Frequently asked questions

What are Braxton Hicks contractions?

Braxton Hicks are practice contractions that can start from as early as week 16. They feel like a tightening or hardening of your abdomen and are usually painless and irregular. They are your uterus practising for labour. They differ from real contractions because they do not get closer together or stronger over time.

When should I start buying baby things?

Many parents start buying larger items (pushchair, car seat, cot) during the second trimester when energy levels are good. Nuhah's essentials guide maps recommended items to your trimester so you can spread the shopping out. Having the big items sorted by week 36 is a good target.

Related reading

Guides
Breastfeeding vs Bottle Feeding: An Honest Guide
Wellbeing
The Second Trimester: What to Expect
Scans & Appointments
The 20-Week Anomaly Scan: What to Expect

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