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Pregnancy by Week·April 23, 2026·1 min read

First vs Second vs Third Trimester Ultrasounds: What to Expect

Compare first, second, and third trimester ultrasounds. Learn the visual differences and the best time for 3D/4D scans in our complete comparison guide.

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Angélica Correa
Author
Angélica Correa
Founder & Lead Sonographer · Baby Studio 4D

Bilingual sonographer based in Raleigh, NC. Six years of experience guiding families through their first 3D, 4D, and 8K HD ultrasound sessions — written here as field notes from the studio.

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