8 Maternal Health Checkups You Should Not Miss

5. Mid-pregnancy anatomy scan (18–20 weeks)

The mid-pregnancy anatomy scan is a detailed ultrasound usually scheduled around 18–20 weeks to review fetal anatomy and growth. During this scan the sonographer examines the brain, heart, spine, limbs, and organs, plus placenta placement and amniotic fluid volume. This window is important because many structural differences are best seen now, and findings influence later monitoring or referrals. The appointment can take longer than early scans because technicians measure and document multiple structures. Parents often find this scan emotionally rich: it’s a chance to learn the baby’s sex where permitted and to save images. If the scan shows a potential concern, your care team will explain what was seen, whether additional imaging or specialist input is needed, and the expected follow-up timeline. Even when everything looks normal, this scan provides reassurance and a clearer plan for growth checks in the third trimester. Practical tip: ask whether partners may attend in-person or by video, and consider bringing questions about your birth plan once the anatomy looks healthy.