My due date is August 30th 2007, how do I work out my exact conception date! >?? :p

Count back 40 weeks from your due date, that should be right around your conception date. Otherwise, ask your OB. I know mine counted right to the exact date that I conceived. I didn't even give him a clue as to when I thought it was and he was right on target.

Last period November 23rd 2006.

Thursday, December 7, 2006 Conception Occurred:
(about two weeks after last menstrual period).

Estimated due date (40 weeks) August 30th 2007.