We don't really know what the story is going to be, lots of guessing and speculation. Maybe she was given a date rape drug, so only vaguely recalls this guy who found her, or helped her, took her home. Now thinks it was him. Or maybe both had too much to drink, had sex, but doesn't remember, until she turns up pregnant, and remembers that night. Or , or, or......any one of a a number of different scenarios.
But I honestly HATE the idea of her pregnancy being a result of rape. I don't want to see any more rape stories on this show. Enough already.