It's been an eventful weekend for Selena Gomez. After joining Justin Bieber at his afterparty to celebrate his three wins at the 2012 American Music Awards on Sunday, Nov. 18, a girls' night out with pal Taylor Swift and a disastrous dinner date with Bieber on Friday, Gomez spent early Monday morning in a hospital emergency room. Gomez suffered from a sore throat and it bothered her so much she could not continue her studio recording session prior to her date with Bieber on Sunday.