Former National Enquirer publisher David Pecker testified Thursday that he believed Karen McDougal’s accusations that she had an extensive affair with Donald Trump. Law360’s Stewart Bishop and Just Security’s Adam Klasfeld relayed the specifics, quoting Pecker’s statements from the stand as he gave evidence in the hush money trial. Answering questions from prosecutors, Pecker explained that he had “concerns” about the McDougal story and contacted Trump’s ex-lawyer Michael Cohen. Want more breaking political news? Click for the latest headlines at Raw Story. “You should go ahead and buy this st…