How can someone not know they are pregnant? This defies logic
http://www.cbc.ca/news/world/story/2012/09/20/british-soldier-gives-birth-afghanistan.html
Belinda Phipps, chief executive of the National Childbirth Trust, a British parenting charity, also suggested the soldier's demanding duties could explain why she either didn't know she was pregnant or attempted to ignore the signs.
http://www.cbc.ca/news/world/story/2012/09/20/british-soldier-gives-birth-afghanistan.html