It appears that Casey Anthony told a psychiatrist that she became pregnant with Caylee after passing out at a party when she was 18 years old. This according to depositions released today.
From the Los Angeles Times:
Casey Anthony told a psychiatrist she believes her daughter Caylee was the product of a date rape — an attack that must have occurred in the fall of 2004 after someone “spiked” her drink and she “blacked out” at a party, according to court records unsealed Wednesday.
The revelations about Caylee’s parentage are contained in hundreds of pages of documents made public Wednesday at the request of the Orlando Sentinel. The depositions were given by two doctors who conducted psychological evaluations of Anthony before her trial.