An example of a large-name performer getting pregnant was discussed in detail a few years back (with posts by the star herself, and the male who allegedly got her pregnant) in this thread:
Pornstar ever get pregnant from porn scene?
And in fact, that thread is identical in subject matter to this one, so I'm going to close this thread and suggest that you post in that one and 'revive' it.
BTW there are also these threads that are slightly on-topic, but probably not as much as the one I already linked to:
Pornstars getting Pregnant - this thread discussed some of the legal ramifications of such an incident
Violet Blue pregnant again from doing scenes! - this thread turned out to be not true. Violet got pregnant from her life partner. How old-fashioned.

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