24 to 28 Weeks

At the 24 week appointment, we review the results of your genetic testing and ultrasound. We will finalize your due date. Some people think their due date changes when they have their ultrasound. There is a margin of error for ultrasounds. This means the due date based on your ultrasound can be within a few days of your last menstrual period. If they fall within these parameters we do not change your due date:

  • First trimester US - 7 days
  • Second trimester US - 14 days
  • Third trimester US - 21 days

The due date becomes an important part of your care if you have pregnancy complications and/or desire to be induced. Otherwise, the baby comes when it is ready and plus or minus a few days does not make a huge difference. He or she already has her birthday picked out!