Selena Gomez and Justin Bieber are constantly being photographed in hot and heavy--aka rather compromising--positions. Friends and family members are reportedly fearing the imminent peril of a possible pregnancy scare. According to OK Magazine, both Gomez and Bieber have been duly warned about what an unplanned pregnancy could mean for each of their careers. A source close to both stars has the following to say about the precarious situation. "Justin's been told straight up that if he's having...