With two babies on board, Mariah Carey has been practicing lullabies and eagerly anticipating the arrival of twins. Still, she expressed a double dose of surprise this weekend when it looked like her new little daughter and son, with husband Nick Cannon, were about to show up early.

The Grammy winner, 42, had a false alarm this weekend and sought medical attention, according to PEOPLE. Afterward, she tweeted about the escapade with relief.

In the early morning hours of her March 27 birthday, Carey told her followers on Twitter that the twins "really wanted 2 celebrate w/us/share the anniversary!" She added, "I started having contractions last night...went 2 the hospital."