Pregnancy begins two weeks before conception

[Sky Warrior Bob]

The 18th week bill includes a new definition for when pregnancy begins. All of the bills passed the Senate and now head to Gov. Jan Brewer ® for her signature or veto. Passage of the late-term abortion bill would give Arizona the earliest definition of late-term abortion in the country; most states use 20 weeks as a definition.

A sentence in the bill defines gestational age as "calculated from the first day of the last menstrual period of the pregnant woman," which would move the beginning of a pregnancy up two weeks prior to conception.

Elizabeth Nash, states issues manager for Guttmacher Institute, a reproductive health research organization in Washington, said the definition corresponds with how doctors typically determine gestational age. She said since the exact date of conception cannot be pinpointed, doctors use the day of the woman's last menstrual period to gauge the duration of a pregnancy. The method does not provide an exact date.

http://www.huffingtonpost.com/2012/0...usaolp00000003

So yeah... Arizona, proving its idiocy yet once again.