When did i conceive if my due date is February 8 2009?

To calculate the date of conception, subtract the estimated gestation period of 40 weeks (a standard full term pregnancy) from the due date.

Due Date: February 8, 2009

Subtract 40 weeks:

37 weeks + 0 days

So, conception likely occurred on May 12, 2008, which is 37 weeks and 0 days before February 8, 2009. Please note that this calculation results is an estimate and the exact date of conception can vary.