It is not uncommon for there to be a discrepancy between the estimated gestational age based on your last menstrual period and the measurements obtained from an ultrasound scan. Ultrasounds are generally considered more accurate in determining gestational age during the first trimester. However, as pregnancy progresses, individual variations in fetal growth can affect the accuracy of dating.
To determine which date is more accurate, it is best to consult with your healthcare provider. They will consider various factors such as your menstrual cycle regularity, early ultrasounds, and any other relevant information to make an informed decision about your due date.
It's important to remember that due dates are estimates and only about 5% of women give birth on their exact due dates. Your healthcare provider will monitor your pregnancy closely and make adjustments if necessary based on further ultrasounds or other assessments.
If you have concerns about the accuracy of your due date or any other aspect of your pregnancy, it's always best to reach out to your healthcare provider for guidance and reassurance.