The track was shut as emergency staff quickly went to Sweeney's aid.
Spectators and viewers at home took to social media to voice their concern for Sweeney, who they say appeared to have hit her neck and her head.
Sweeney was heading down during the fourth run of the luge competition in PyeongChang when she became sideways on her toboggan.
Sweeney began to lose control coming into the turn 9 and bounced off both sides of the track, coming off her sled.
According to the NBC, Sweeney told said, "I'm very sore, and pretty stiff". It wasn't long, however, before Sweeney was able to stand up and walk off the ice, and she was met with resounding cheers and applause from fans and spectators. So thanks for all the support, you guys. According to an online broadcast, she was taken to a hospital.
South Korea had been Sweeney's first Winter Olympics appearance after she narrowly missed out on going to the Vancouver games in 2010 - losing the final spot on the team to her older sister Megan. "I don't know. We'll see", she said.
Later in the final run, Britcher lost control at the start and collided with a few walls - but got down the track without crashing or sustaining serious injury.
After a delay of approximately 10 minutes, competition resumed and Germany's Natalie Geisenberger won the gold medal, as she did in Sochi four years earlier.