Even Beyoncé needs a break. The singer has canceled her Tuesday concert in Belgium because of dehydration and exhaustion.

B’s publicist tells The Associated Press that her client has been advised by her doctors to rest. She was scheduled to perform at the Sportpaleis in Antwerp, but the show will be rescheduled and tickets can be used at the makeup show.

She alerted her fans via her Facebook page. “Unfortunately tonight’s show has been canceled. Please keep your tickets for the rescheduled show. Our sincerest apologies for the late notice and stay tuned for the new show date announcement,” read the message.

Her next tour date is Wednesday at the same arena, but it’s currently unknown if the show will go on. “She is awaiting word from her doctors before making a decision,” said her publicist.

The cancellation comes amidst rumors that Beyoncé is pregnant with her second child with husband Jay-Z.

Beyoncé launched “The Mrs. Carter Show World Tour” in Belgrade, Serbia, last month and is scheduled to kick off the U.S. leg on June 28.