Kourtney Kardashian 'Horrified' By Water Birth

Kourtney Kardashian 'Horrified' By Water Birth: Kourtney Kardashian was set on a natural water birth until a few days ago when she witnessed one first hand ... and now when her water breaks she's making a beeline for Cedars .. TMZ has learned.Our Kardashian sources tell us ... Kourtney and baby…