Is Blue Ivy going to be a big sister soon? Rumors that her mom, Beyoncé, is pregnant again are swirling after the megastar canceled an upcoming tour date in Belgium. The 31-year-old is currently on her multicity world tour, “The Mrs. Carter Show,” which comes to the Barclays Center in Brooklyn the first week of August.

Her publicist emailed the Associated Press, stating that doctors advised the singer to rest due to exhaustion and dehydration.

The statement, in part, said that “she is awaiting word from her doctors before making a decision” about her next tour date, which is scheduled for Wednesday in the same arena, the Sportpaleis in Antwerp.

Those who purchased tickets can use them for the rescheduled show.

Beyoncé was first rumored to be pregnant just last week, when she brought one-and-a-half-year-old Blue Ivy on stage during her world tour. When the singer bent over to grab her baby's hand, a small bump was visible beneath her skin-tight bodysuit.

Then at the Met Gala a few days later in New York, the megastar stunned in a Givenchy gown, but her midsection was hidden with a large black belt.

Insiders told the New York Post’s Page Six that Beyoncé is in fact expecting her second child with husband Jay-Z.

Last January, Beyoncé spoke about having more children, saying: “I would like more children. I think my daughter needs some company. I definitely love being a big sister.”

When asked when she would have another child, she simply replied, “At some point. When it’s supposed to happen.”