Pregnancy Week 18: What to Expect
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Medically reviewed by
Baby Circle Medical Board
Reviewed on 12 July 2026
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Your baby is about the size of a Bell pepperApprox. ~14.2 cm · Second trimester
Your baby this week
Baby can hear sounds, the nervous system matures, and yawning and hiccups begin.
Your body this week
Movements clearer; possible dizziness from blood-pressure shifts.
💡 Tips for week 18
- Rise slowly to avoid dizziness
- Talk or sing to your baby
- Stay hydrated
✅ To do this week
- Anatomy (TIFFA) scan (18–20 wks)
- Discuss results with your doctor
- Note baby's active times
Common questions — Week 18
Can my baby hear me?
Yes — by around 18 weeks, so talking and music are lovely to start.
Why do I feel dizzy?
Blood-pressure and volume changes; move slowly and eat regularly.
Track your week with The Circle 💜
Private, doctor-supported community for parents due the same month as you.
Join The CircleFull 40-Week GuideReferences
- WHO. Recommendations on antenatal care for a positive pregnancy experience. who.int
- ACOG. Your Pregnancy and Childbirth. acog.org
- NHS. Week-by-week guide to pregnancy. nhs.uk
- CDC. During Pregnancy. cdc.gov
- UNICEF. Maternal and newborn health. unicef.org
- Indian Academy of Pediatrics. iapindia.org
Medical disclaimer: This article is for general education only and is not a substitute for professional medical advice. Always consult your doctor about your pregnancy, and seek care immediately for any warning signs. Reviewed by the Baby Circle Medical Board.