Your Pregnancy Scan Schedule, Trimester by Trimester

First trimester (weeks 1–12)

Dating scan (7–12 weeks): This confirms the pregnancy, checks it's developing in the right place, and estimates your due date based on the baby's size.

NT scan (11–14 weeks): This measures fluid at the back of the baby's neck, which is used along with a blood test to assess early risk of certain chromosomal conditions.

Second trimester (weeks 13–26)

Anomaly scan (18–22 weeks): Often called the "detailed" or "level 2" scan, this checks the baby's organs and structural development in depth. It's one of the most important scans of the pregnancy.

Third trimester (weeks 27–40)

Growth scans: These track the baby's growth and check the position, especially in the final weeks. How many you need depends on how your pregnancy is progressing.

Doppler studies: If your pregnancy is considered higher-risk, a Doppler study may be added to check blood flow to the baby.

What about 4D sonography?

4D sonography gives a moving, lifelike view of the baby's face and movements. It's a lovely add-on for bonding, but it doesn't replace the anomaly scan as the main tool for checking the baby's health.

Every pregnancy is a little different

This is a general guide, not a fixed prescription — Dr. Chandak will tailor your exact scan schedule based on your specific pregnancy, any risk factors, and what your obstetrician recommends. See our full Fetal Medicine & Pregnancy Scan page for more detail on each scan.

Frequently asked questions