Pregnancy Due Date to Conception Date: Calculate Weeks Pregnant

Question
With a due date of Oct 31 2009 what is the most likely date of conception and how many weeks would that be as of now thanks

Answer
Hi Adam,

A person with a due date of October 31 would be 24 weeks and 2 days pregnant right now. (7/13)

It is impossible to get the exact date of conception - and without more information (concerning the pregnant mom's last period, length of periods, are they regular, information from any 1st trimester ultrasounds or other tests,etc.)I can only give an approximate range - somewhere during the first 10 days of February.