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(WENN) - Singer Keri Hilson has sparked fears for her health after vomiting and fainting on a flight on Friday.

Hilson has been in China this week, but her hectic schedule has taken its toll on the star.

The 29 year old took to her Twitter page on Friday to reveal she was taken ill on an airplane as she left the country, and she blames her lack of sleep for the health scare.

In a post, she writes:

Hilson, who is heading back to her native U.S., admits she began to feel better after coming round but was so distracted by her sickness she left several personal belongings on the flight.

She adds:

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