The "All About That Bass" hitmaker had to axe the remaining dates on her MTrain Tour in early August after suffering her second hemorrhage in less than two months following a bout of bronchitis.
She previously scrapped a string of dates at the start of July, reported People magazine.
Trainor, 21, headed into hospital in Los Angeles early this week and later took to Instagram to share side-by-side photos of herself in her hospital gown prior to the operation and another as she headed home.
"My before and after pics. I look so hurt haha I survived tho!," she wrote, captioning the photo with a wink emoji.
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