A prenatal ultrasound is more than just a medical test—it’s one of the first moments an expectant mother gets to see her baby. From that very first glimpse of a tiny heartbeat to tracking their steady growth, ultrasounds offer reassurance, connection, and a way to journey with your baby as they develop. While they help monitor health and spot any concerns early, they also allow you to witness your little one’s milestones even before birth.

Why Are Pregnancy Ultrasounds Important?

Ultrasounds are performed for two main things: to evaluate the overall health and development of the fetus while detecting any medical conditions related to pregnancy. To have a broader picture of the several reasons, these include:


  • Tracking your baby’s growth and development

  • Identifying congenital conditions or birth defects

  • Estimating your due date more accurately

  • Determining if you’re expecting more than one baby

  • Checking the placement of the placenta

  • Estimating your baby’s size

  • Measuring the amount of amniotic fluid

  • Finding out your baby’s sex


However, the purpose and timing of ultrasounds can vary depending on where you are in your pregnancy! Each trimester comes with its own changes and milestones—not just for your baby but also for your body. That’s why they are scheduled at specific points during pregnancy to address different needs. Take a closer look at what ultrasounds are typically for in each trimester:

First Trimester Ultrasound

The first ultrasound is usually done between 6 to 12 weeks of pregnancy, though the exact timing may vary based on your provider’s recommendation. This scan is often an exciting milestone—it’s typically the first glimpse of your baby! It helps confirm the pregnancy, detect your baby’s heartbeat, and establish a more accurate due date based on your baby’s size. This early ultrasound also checks for multiple pregnancies and ensures the pregnancy is developing in your uterus.

Second Trimester Ultrasound

Between 18 to 22 weeks, you’ll likely undergo what’s known as the anatomy scan. This is a more detailed ultrasound that closely examines your baby’s growth and development. It’s also when many parents choose to find out the baby’s sex—if the baby cooperates and if you want to know! Beyond the excitement, this scan is crucial for detecting certain birth defects or developmental concerns. You can also visit a Kindred clinic near you and inquire about a Cervical length assessment, this can help determine if you’re experiencing any shortening of the cervix, as this is associated with pre-term labor.

Third Trimester Ultrasound

In some cases, another ultrasound may be performed later in pregnancy, around after 28 weeks, depending on your provider’s guidance. This third-trimester scan typically focuses on monitoring your baby’s growth, position, and overall well-being as you approach delivery, especially if you have other pre-existing conditions like Hypertension and Diabetes. It can help assess key indicators like amniotic fluid levels, fetal movement, and the baby’s position in the womb—important details for preparing for labor and delivery. It may also offer another chance to find out the baby’s sex!

What Comes Next: Specialized Ultrasound Tests

While routine ultrasounds are part of most pregnancies, your healthcare provider may recommend specialized ultrasounds if certain risks or complications are present. These additional scans help ensure that both you and your baby are healthy and well-supported throughout your pregnancy journey.

Congenital Anomaly Scan

One of the key specialized tests offered during pregnancy is the Congenital Anomaly Scan, typically performed between 18 to 22 weeks. This detailed ultrasound is specifically designed to check for any physical abnormalities in the baby’s development. While this scan can bring reassurance and peace of mind, it also plays a critical role in early detection and planning, allowing healthcare providers to offer the best care possible should any concerns arise!

Fetal Biometry with Gender Determination

Fetal biometry is a vital ultrasound service that not only tracks your baby's growth but can also reveal their gender. Best scheduled between 18 to 22 weeks of pregnancy, this ultrasound measures key indicators like head circumference, femur length, and abdominal circumference to assess your baby’s growth and development. It’s an exciting moment for expectant parents, as this scan often coincides with the thrilling gender reveal.

Biophysical Scoring

Biophysical scoring is a specialized ultrasound typically recommended after 28 to 32 weeks of pregnancy, particularly in high-risk pregnancies like those with Hypertension, Diabetes or Thyroid Disease or when a baby is overdue. This assessment evaluates several important health markers: the baby’s movements, breathing, muscle tone, and amniotic fluid levels. The goal is to ensure that your baby is thriving in the womb!

Babyface 3D/4D Ultrasound Packages

For parents eager to catch a glimpse of their little one’s features before birth, Babyface 3D/4D ultrasound packages offer a heartwarming experience. Performed between 26 to 32 weeks of pregnancy, this ultrasound captures lifelike images of your baby’s face when facial features are more developed and surrounded by enough amniotic fluid for clear imaging.

The Babyface 3D/4D Ultrasound Package comes in three variations: Classic Black & White 2D/3D, Warm Sepia 3D/4D, and Soft Peach 3D/4D. These keepsake ultrasounds let you bond visually with your baby before they arrive!

Gender Reveal Packages

As part of your journey through pregnancy, one exciting milestone is the gender reveal ultrasound, typically performed between 18 and 22 weeks of pregnancy. Many keepsake ultrasound services offer a variety of gender reveal packages to choose from, including options like Classic Black & White 2D/3D, Warm Sepia 3D/4D, and Soft Peach 3D/4D. These packages provide expecting parents with a memorable and visually stunning way to share the big news!

More Than Medical

Ultrasounds are not only an essential medical tool but also a deeply personal part of your pregnancy experience. From the first heartbeat to your baby’s first smile in 4D, each scan offers reassurance, connection, and unforgettable memories. By understanding the purpose and timing of each ultrasound, you can feel more prepared and excited as you move through each stage of your pregnancy journey!

Last medically reviewed on April 15, 2025. 


References 

Cleveland Clinic. (2022, September 28). Ultrasound In Pregnancy: What To Expect, Purpose & Results. Cleveland Clinic. https://my.clevelandclinic.org/health/diagnostics/9704-ultrasound-in-pregnancy

O’Brien, T. (2024, June 24). How Many Ultrasounds Do You Need During Pregnancy? Parents. https://www.parents.com/pregnancy/stages/ultrasound/ultrasound-a-trimester-by-trimester-guide/