Her twins aren't due for a while yet. But Mariah Carey was rushed to hospital on Sunday after she started having contractions.
The singer - who turned 41 on Sunday - tweeted about how she almost gave birth on her birthday.
She wrote: "So #dembabies really wanted 2 celebrate with us/share the anniversary!"
"I started having contractions last night..went 2 the hospital. Finally they said I could come home after they got it under control."
"But they almost came on 3/27 - happy anniversary indeed!!! We have a few more weeks 2 go but - wow!!!: )"
Mariah married actor and radio host Nick Cannon in 2008.
The couple are expecting their first children - a boy and a girl - together.
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