Выводит один массив вместо двух

$year = $_POST["year"]; 
$month = $_POST["month"]; 
#подключение к бд 
   $stmt = $pdo->prepare("SELECT news_id, title, FROM_UNIXTIME(date) AS readableDate  
FROM re_news  
WHERE YEAR(FROM_UNIXTIME(date)) = :year AND MONTH(FROM_UNIXTIME(date)) = :month"); 
   $stmt->bindParam(':year', $year); 
   $stmt->bindParam(':month', $month); 
   $stmt->execute(); 
   $row = $stmt->fetch(PDO::FETCH_ASSOC); 
   print_r($row); 
 

Array 
( 
    [news_id] => 7 
    [title] => мс смваааап 
    [readableDate] => 2017-12-28 22:48:51 
)