How to Prepare for Your First Ultrasound

Transvaginal or transabdominal?

In early pregnancy (usually before 11 to 12 weeks), we often use a transvaginal scan. A thin, covered probe is gently placed in the vagina, which gives a much clearer view of the tiny pregnancy. It is safe for you and your baby and should not be painful.

Later in pregnancy, scans are done transabdominally — the probe moves over your tummy with a little warm gel.

Bladder: full or empty?

For a transvaginal scan, please empty your bladder just before the exam. For some early transabdominal or pelvic scans, we may ask you to drink 4 to 6 glasses of water an hour before and not to urinate. Our staff will tell you which applies when you book.

What to wear and bring

• Comfortable, two-piece clothing so your tummy is easy to reach.
• A valid ID and your doctor's request form, if you have one.
• Previous ultrasound reports and lab results.
• Your questions — write them down so you don't forget.
• One companion is welcome to share the moment with you.

During the scan

The scan usually takes 15 to 30 minutes, depending on the type. Your sonologist will explain what they see on screen. Sometimes the baby's position makes certain views hard to get — we may ask you to walk around, change position or come back another day. This is normal.

After the scan

You will receive your report, which you can also view online through My Reports. Bring it to your attending OB-GYN to discuss next steps.