Olympic gymnast McKayla Maroney today revealed she has no choice but to undergo surgery for kidney stones that haven't budged in three weeks. The 25-year-old vault queen made headlines in February for being rushed to the E.R. in "severe pain," with the late-night visit eventually bringing a CT scan confirming a kidney stones diagnosis. McKayla took to Instagram for her 1.3 million followers ahead of the weekend to announce that, regretfully, she now has to return for more treatment. Check it out below.