The All About That Bass hitmaker took to to explain to fans that she was cancelling a performance at Michigan's Common Ground Music Festival, which kicks off on Tuesday (07Jul15), as well as two dates in Detroit, Michigan, and Chicago, Illinois.

Trainor uploaded a video showing a meeting with her doctor where she is informed that she must cancel her forthcoming shows.

Despite the cancellations the singer assured fans she was returning to health and would soon be ready to storm the stage.

She added the caption, "I have bad news, my doctor says I have to postpone two more dates, Detroit & Chicago and sadly I have to cancel my appearance at the Common Ground Music Festival.

"But there is good news!! I'm feeling much better, have already rescheduled most dates and will come back around to see you all soon!... Thank you Dr. Kessler for seeing me immediately and being so helpful and thank you guys for all the edits/get well posts you made. You made me feel a lot better about this crappy situation. I love you all so much!!"

The singer's health woes come after British crooner Sam Smith underwent surgery for a similar condition earlier this year (15).