Frank Micelotta/Invision for Parkwood Entertainment/AP Images

Beyoncé isn't doing much to dispel those pregnancy rumors.

The singer was forced to cancel her Mrs. Carter Tour show in Antwerp, Belgium, on Tuesday, the concert venue, her rep told E! News.

The reason? Blue Ivy's mama "has been advised by her doctors to rest as a result of dehydration and exhaustion."

Queen Bey is said to be "awaiting work from her doctors before making a decision on the second Belgium date scheduled for May 15." And Monday night's show will be rescheduled "as soon as possible."

Fair enough. And whether or not Beyoncé is pregnant now remains unclear, but she does have babies on the brain.

The 31-year-old singer recently told ABC News she "would like more children," adding, "I think my daughter needs some company. I definitely love being big sister [to Solange]."

So, until Jay-Z spells raps it out for us, or Mrs. Carter pulls another tasteful, this-is-my-moment-y'all pregnancy reveal, it's all about Bey bumpwatch 2013!

—Reporting by Lindsay Good and Alicia Quarles

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