OHSU Center for Women's Health

Where Healing, Teaching and Discovery Come Together

Wellbeing Ultrasound


  • Third trimester


The purpose of a Wellbeing Ultrasound varies depending on your pregnancy but may include:

  • Evaluating the growth and health of the baby/babies
  • Confirming the baby's position in preparation for delivery
  • Measuring the size of the fetus and estimating fetal weight
  • Examining movements of the fetus
  • Measuring the amount of amniotic fluid


Not all women need ultrasounds in their third trimester. Your doctor may refer you for a 3rd-trimester ultrasound if there are signs of increased concern for you or your pregnancy or childbirth.

Your doctor may want you to have a 3rd trimester ultrasound if:

  • You have had previous complications of pregnancy such as pre-eclampsia, growth restriction, diabetes, or stillbirth.
  • You have developed a problem during the course of your pregnancy. o You have a multiple pregnancy (twins, triplets).
  • You are concerned about the movement of your baby/babies.
  • Your baby is suspected to be in the breech position and you are planning a vaginal delivery.
  • There is concern that your baby has stopped growing.

Sometimes done in a series

If you have a higher-risk pregnancy, your pregnancy care may include a series of ultrasounds as we keep close watch over the health and development of your baby (or babies).

Schedule an Appointment

To schedule an prenatal ultrasound appointment, please call

503 418-4500