What’s Your Due Date?

Be prepared to discover your due date is not what you were told by your doctor.

Last menstrual period LMP may not be the best date to use as the basis of a due date calculation, but it remains popular because few women know exactly what day they ovulate or conceive a pregnancy, and because no algorithm can accurately predict the exact day that spontaneous labor will occur no matter what considerations are taken into account.

Franz Karl Naegele (1778–1851), the German obstetrician who devised the rule, named after him, published his “Lehrbuch der Geburtshilfe,” “Textbook of the obstetrics” for midwives in 1830. Since then his rule is used for estimating the baby due date.

The rule estimates the expected date of delivery (EDD) from the first day of the woman’s LMP by adding 1 year, subtracting three months and adding seven days to that date. The result is approximately 280 days (40 weeks) from the LMP.

Given the fact that human gestation lengths are only estimates of an average, it is helpful to consider gestation time as a range of dates rather than a single “due date”. The median found by Naegele’s Rule is merely a guideline for the day at which half of all births occur earlier, and half of all births occur later. Births rarely occur on a due date, but they are clustered around due dates.

About 90% of babies will be born within three weeks of their EDD, which is considered a standard deviation from the estimate.

21% will be born within 3 days of EDD. Only 4% of births occur on the EDD. For women with irregular MP the estimation is even more obscure.

In HypnoBirthing we call the estimated date of baby delivery estimated date of arrival. It is considered by a wide range of midwives, that the baby is ready when the baby is ready, and your birth will happen within the 41 weeks period. Because of the Natural Expulsion Reflex NER, you can’t stay pregnant forever. Leaving the date of arrival to the baby and expecting patiently, most HypnoBirhting moms use the time of expecting to effectively prepare for the calm and comfortable birth on the date when the baby is finally ready to arrive.

Tags: , , ,

Leave A Reply (No comments so far)

No comments yet

Call Us Today 866-522-5886

HypnoBirthing® World

Flag Counter