Expected Date of Delivery (EDD): A Comprehensive Guide

The Expected Date of Delivery (EDD), often referred to as the ‘due date’, is a crucial aspect of pregnancy. It is a projected date when a pregnant woman is most likely to give birth. It’s important to note that only about 4% of women actually give birth on their EDD, as it’s not an exact science but a best estimate.

Real Life Example

Consider a woman whose last menstrual period started on January 1. With an average menstrual cycle of 28 days, her ovulation would most likely occur around January 14. If she conceives during this period, her expected date of delivery would be around October 7 of the same year. This is calculated by adding 280 days (40 weeks) to the first day of her last menstrual period.

Calculating the EDD

Most healthcare providers calculate the EDD by adding 280 days to the first day of your last menstrual period. This method assumes a 28-day cycle with ovulation on day 14. However, if your cycles are longer or shorter than 28 days, this calculation may not be accurate.

Another method is the Naegele’s Rule, which also involves adding 280 days to the first day of your last menstrual period, but with a tweak for those who do not have a 28-day cycle.

Ultrasounds and EDD

An ultrasound, usually performed between the 8th and 14th week of pregnancy, can provide the most accurate EDD, especially if the date of your last period is uncertain.

EDD and Pregnancy Management

The EDD helps healthcare providers track the progress of the pregnancy and the development of the baby. It also assists in planning various interventions and determining the appropriateness of certain prenatal tests.

Free Consultation with Dr. Vijaya

Dr. Vijaya, a renowned Gynecologist, offers free consultation to all pregnant women. You can reach her to book an appointment at 07941057551. She can help you understand more about the EDD and answer all your pregnancy-related queries.