By Daily Mail Reporter
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Drama: Selena Gomez wash rushed to hospital last night following an appearance on the Jay Leno show suffering a severe headache and nausea
Selena Gomez was rushed to hospital last night following an appearance on U.S. television.
The 18-year-old singer and actress was suffering nausea and a severe headache, her spokesman told MailOnline.
She was taken to a hospital in the Los Angles area and is currently undergoing tests.
The cause of her illness is, however, still a mystery.
A spokesman for the star confirmed: 'Last night after Selena's appearance on The Tonight Show she wasn't feeling well and was taken to the hospital.
'She is currently undergoing routine tests.'
Gomez seemed to be on good form during the show, telling the host how her boyfriend Justin Bieber - who today tweeted his sweetheart a Twitter message of support - has already 'passed the mom test' saying her mother Mandy had given Bieber, 17, the thumbs up.
'Has your mom met Justin Bieber?' Leno asked, to which the smiling former Disney star replied: 'Yes.'
Well wishes: Boyfriend Justin Bieber tweeted a message of support
So in love: Justin and Selena at NBA finals between the Miami Heat and the Dallas Mavericks at the American Airlines Center in Dallas, Texas, earlier this week
'And how did that go? Ok? Did she like him?' asked Leno.
'He passed the test," the Texas-born star responded.
Selena and Justin have been enjoying a whirlwind romance in recent months.
They attended the NBA finals together in Dallas earlier this week and enjoyed a romantic break together in Hawaii recently.
She has been by his side to watch him scoop awards at the recent Billboard Awards too.
And just last month Selena accompanied him to his homeland of Canada to meet his family.
But despite their relationship seemingly going from strength to strength, Selena has had a tough time with some of Bieber's fans.
It was recently reported how she had received online death threats from jealous fans.
Monte Carlo, an upcoming romantic adventure starring Gomez, Katie Cassidy and Leighton Meester, arrives in cinemas on July 1.
Romantic: She recently accompanied Bieber on a trip to his homeland in Canada and met his family. She told Leno last night her mother was a big fan of his