United Kingdom, July 25 -- Simone Biles has undergone a "procedure", weeks after her near-death experience.

The Olympic gymnast cryptically revealed last month that "almost dying wasn't on [her] bingo card" and while she still hasn't revealed what happened to her, she's now shared the news that she was in hospital on husband Jonathan Owens' 31st birthday on 22 July.

Sharing a photo of herself in a hospital gown with the Indianapolis Colts player, she wrote: "His birthday but he takes me to get my procedure.

"I woke up singing bossman slow 'talk my s***.' "

Simone has yet to reveal any details about the procedure she underwent or whether it was related to her mystery incident last month.

Fans were worried after the seven-time Olympic ...