She was hoping to be sprung from the hospital on Wednesday (April 16), but it appears Miley Cyrus won't be going anywhere just yet.

According to the singer's representative, she will remain hospitalized for a severe allergic reaction to the antibiotic Cephalexin, which she had been prescribed to treat a sinus infection.

The 21-year-old's reaction was so bad that her throat nearly closed and she was barely able to speak.

Miley's rep expects more concerts to be cancelled, as she is expected to be laid up another 5-15 days. Stay linked to GossipCenter for more updates!