Ariana Grande tells fans she's 'very sick', may have to cancel shows

Singer Ariana Grande is telling her fans that she may be forced to cancel upcoming shows on her world tour as she's "very sick".

She posted videos on her Instagram claiming her "throat and head are still in so much pain" and is struggling to breathe because of a bad sinus condition.

"I just really don’t know what’s happening with my body right now and need to figure it out."

Grande says she plans to see a doctor soon.

"I’m scared that I might have to cancel some things, so this is kind just a heads up of like I don’t know what’s happening with my body, and I’m really disappointed and freaked out of why I can’t get better because it’s been over three weeks at this point."