Kate Middleton admitted she’s having ‘good days and bad days’ fighting cancer, as a royal expert has said she’s making one thing her top priority when it comes to her health. The Princess of Wales made her first public appearance in six months at the Trooping the Colour event over the weekend. Alongside her husband, Prince William, and their children George, Louis and Charlotte, the 42-year-old appeared in good spirits. Royal fans were delighted to see the next British Queen smiling and supporting her family during the difficult time she is facing at the moment. Ahead of the appearance, Kate M…