Adele made a shocking revelation about her health. While the music icon, 36, took the stage during one of her recent shows at Caesars Palace in Las Vegas, she got candid about losing some of her ability to hear after contracting an infection from a rare water bacteria. “I have an ear infection, which is pretty grim,” Adele told the packed audience. “I’ve never had one before. It’s the most painful thing that’s ever, ever happened to me. It was worse than childbirth. It’s a rare water bacteria. It’s very hard to treat. I was on the wrong antibiotics for a few days and they managed to give me on…