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She doesn't look pregnant to me, I do not see any visible sign of a gravid spot.
When a livebearer is pregnant she will develop a dark area near her anal fin, this is called a gravid spot. As the pregnancy progresses this spot will become larger and if the fish is light colored enough you can some times see fry inside her. If she is a male it will only be a matter of time before she is pregnant, good luck!