Katie Holmes worried about the upcoming birth of her baby

According to the tenets of 43-year-old fiancé Tom Cruise's religion, Scientology, Katie Holmes will have to be silent (not even a moan!) during the delivery, lest the trauma be imprinted in her baby's brain reports Star magazine. Plus, a source says, "Only Tom and a few Scientology supporters will be in the room - not Katie's mother!" And Scientology advocates separating the baby from its mother for at least the first 24 hours after birth. Now, Star has learned, Katie, 27, is stressed about post-birth life with baby!

Scientology's strict rules dictate that mothers shouldn't coddle their kids or even treat them with conventional medicine when they're sick. "It's a lot for an expectant mother to be worrying about," says a friend of Holmes.

"Katie has seen the way Tom's raising his own kids, Connor, 11, and Isabella, 13, who are Scientologists, and I bet she's nervous about what that way of life will mean for her child."