JoJo Siwa had an unexpected hospital visit over the holiday weekend... JUST before a big show! In a new TikTok video, the Karma singer opened up about an "excruciating pain" she experienced hours before a scheduled performance at the Minnesota Mall of America on Friday. In the video, which she posted on Saturday, JoJo revealed that "for the last couple of days" whenever she'd exert physical energy - whether it be dancing or even just simply walking - her stomach would "really, really hurt.