Gabby Douglas Hospitalized with Mouth Infection

Three-time Olympic gold medalist Gabby Douglas had to go back to the hospital Sunday night due to an infection in her mouth.

Douglas' publicist, Lesley Burbridge, told Maria Mercedes Lara of People: "Gabby is back in the hospital tonight being treated for a seriously infected past mouth injury. She continues to have deep swelling and adverse reactions to medications."

Douglas posted a picture on Twitter earlier on Sunday saying she was out of the hospital after her health scare, but it seems she returned for treatment later that night.

The 2016 United States Olympic gymnastics team, dubbed the Final Five, presented an award at the MTV Video Music Awards on Sunday night without Douglas.

Per People's Colleen Kratofil, four-time gold medalist Simone Biles said on the award show's red carpet that Douglas seemed to be improving: "I think she's feeling a little better, but she's staying home as a precaution. We're sad she couldn't be here to enjoy this with us. We miss her!"

MTV tweeted "feel better, darling! we miss you."

Laurie Hernandez sent a message to her teammate on Twitter:

During the show, the members of the U.S. gymnastics team gave Beyonce an award for Best Female Video:

Douglas won two gold medals at the 2012 Games in London. She won a third gold earlier this month as part of the 2016 team in Rio.