My due date is also Oct 16 and I had been tracking my basal body temperature so I know exactly which day I conceived. You too would have ovulated on January 23 like I did. Sperm can live inside you for up to 5 days so sex on any of the previous 5 days could have resulted in your pregnancy. Congratulations!
It is on January 2,2010.
My due date is October 16 and the last day of my last period was January 22, 2010. When did I conceive?