Length Of Pregnancy: Healthy Term Can Vary By Five Weeks

How long a healthy pregnancy lasts can vary by as much as five weeks, even when doctors precisely determined the date of conception, a new study suggests.
Although the length of a healthy pregnancy is known to be variable, some of this variation was thought to be due to errors in determining the age of the baby, the researchers said.
Length Of Pregnancy: Healthy Term Can Vary By Five Weeks