• Week by Week
  • Sex and Pregnancy
  • Weight Gain
  • Exercise and Nutrition

New to the forum? Sign Up Here!

Already a member? Please login below.

Forgot your password? Need Help?  
Learn and Discuss About...

How Do Doctors Know

1 posts on this thread and the last post was on May 7th, 2005 11:20 AM
There are currently 4886 members logged in.
julia - May 5th, 2005 10:35 PM
 [Original Post]

how do doctors know when your exact due date is...i know its a prox. but what the science around it

Julio - May 7th, 2005 11:20 AM

The "average" size of a fetus a any given stage of gestation is known. Based on that info your doc can tell about how far along you are. It's pretty close when you take into account info provided by the woman LMP etc. But because they are 'averages' they can be off on the EDD if you are genetically predisposed to haveing bigger or smaller than 'average' sized babies.