Natalie Anderson is opening up about the roller coaster of emotions that followed her surprising recent departure from The Challenge: Double Agents.  The 34-year-old reality TV mainstay abruptly left the MTV competition show during the Wednesday, Jan. 13 episode, with host T.J. Lavin explaining that she was "no longer cleared" to compete. Although she was cryptic during her final episode about the reason for her exit, Natalie told Us Weekly on Jan. 13 that she had to leave because she learned that she and Devin Perez, her boyfriend of more than a year, were expecting a baby. Sadly, not long after walking away from the show, she experienced a miscarriage.  Producers had...