Most healthy pregnancies typically involve about 2 to 3 ultrasound scans, but the exact number can vary depending on individual health factors and pregnancy risk level.
Typical Ultrasound Schedule During Pregnancy
- Early Pregnancy Ultrasound (6-9 weeks): Confirms pregnancy, checks for heartbeat, estimates due date, and ensures the baby is correctly located in the uterus
- First Trimester Ultrasound (11-14 weeks): Sometimes combined with nuchal translucency screening; assesses early anatomy and screens for chromosomal abnormalities
- Second Trimester Ultrasound (18-22 weeks): Known as the anatomy or anomaly scan, this detailed ultrasound checks fetal anatomy, screens for abnormalities, determines the sex of the baby if desired, checks amniotic fluid, and placenta location
- Third Trimester Ultrasound (28-40 weeks, often around 36 weeks): Used to assess fetal growth, position, placenta function, and amniotic fluid volume; more common in high-risk pregnancies
Additional Notes
- Most women with low-risk pregnancies have 2 ultrasounds: one in the first trimester and one in the second trimester
- Some providers may perform an early ultrasound as soon as 6-8 weeks to confirm viability and rule out ectopic pregnancy
- More ultrasounds may be recommended if there are complications, multiple pregnancies, or maternal health conditions such as diabetes or hypertension
- The American College of Obstetricians and Gynecologists (ACOG) recommends at least one ultrasound in the second trimester between 18 and 22 weeks
In summary, while 2-3 ultrasounds are typical for a healthy pregnancy, the exact number depends on individual circumstances and medical advice.
