Development
What is developing around week 21
Around the 20-week source checkpoint, activity increases; hearing and swallowing are developing, and some pregnant people begin noticing movement, although timing varies.
Your body
Changes you may notice
Second-trimester changes may include a growing abdomen, back or pelvic discomfort, skin changes, tingling hands, and swelling. Sudden or extreme swelling, significant itching with other symptoms, or anything that feels wrong deserves prompt clinical guidance.
Symptoms vary widely. Absence, presence, or intensity of a symptom cannot confirm that a pregnancy is progressing normally.
This week’s focus
A practical next step
Begin noticing your baby’s developing movement pattern without relying on a universal movement number.
- Begin noticing your baby’s developing movement pattern without relying on a universal movement number.
- Keep appointments and follow the plan created with your prenatal care professional.
- Save new symptoms and questions in one place so changes are easier to explain.
Prenatal visit
Questions worth bringing with you
- What should I understand or prepare during pregnancy week 21?
- Which symptoms should make me call you now rather than wait for my next appointment?
- What tests, vaccines, medicines, or decisions are coming next in my care plan?