The size of the baby correlates less and less with its age as time goes on. Sometimes a trans-vaginal examination shows that your pregnancy is less advanced than expected. What can be seen? Author information: Logically, one might imagine we represent a pregnancy by how much time has elapsed since conception. Pregnancy ultrasound involves an anatomic survey of uterus and adnexa .
Anatomy Pregnancy ultrasound involves an anatomic survey of uterus and adnexa .
How Doctors Date Pregnancies, Explained
It has been reported that approximately one half of women accurately recall their LMP 2—4. The EDD from the early dating scan is used - if the last menstrual period is not known or is unreliable, or the dating scan differs from the last menstrual period dating by more than 5 days. A pregnancy is based on being days long, which is 40 weeks more like 10 months not 9! Independent journalism means we have the power to be as transparent as possible, challenging the powerful elite, and tackling the tough questions. This book is distributed under the terms of the Creative Commons Attribution 4. Pregnancy Dating.
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