This is because there is too large a discrepancy between your due date based on your menstrual cycle compared to your clinical exam.
This determines when you ovulated if you have a regular, 28-day menstrual cycle.
It will depend on whether the first day of your last menstrual period is correct and if you have a reliable, regular 28-day menstrual cycle.
From your clinician’s perspective, an accurate due date is crucial because it will impact the timing of many medical tests and decisions that will need to be made throughout your pregnancy.
* Estimated date of confinement is the clinical term used to define your due date. Example: If you are 10 weeks pregnant based on your LMP and your exam at your first prenatal visit indicates you are 16 weeks, an ultrasound will be performed to determine your due date.
Menses can be irregular when they start (menarche) and when they end (menopause).
This information can also help to determine how accurate your last menstrual period is.
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Time-reduction is also a very sensitive element when it comes to Electronic Data Capture.