Beyonc Knowles is apparently experiencing the typical inconveniences of pregnancy.

The 30-year-old performer is expecting her first child with rapper husband Jay-Z but has not let it slow her down.

She went to watch her man perform during his Watch The Throne concert tour with Kanye West in Florida recently and although she loved the show, she had to leave the venue several times, it is reported.

"She took about 14 bathroom breaks," an eyewitness told Us Weekly of the singer's appearance at the Fort Lauderdale show on November 14. "But she barely stopped dancing!"

Beyonc and Jay-Z have been inseparable of late and the Single Ladies star has been travelling with her husband to many of his concert dates.

Instead of sitting in the VIP box, the Grammy winner frequently joins the crowd in the front row and sings and dances along apart from when she has to go with the call of nature.

The mother-to-be is taking a hiatus from performing herself until she gives birth in February to a baby girl.

But her new concert DVD, filmed in the early stages of her pregnancy, offers a behind-the-scenes glimpse into her four sell-out shows at the Roseland where she says she thought everyone knew she was expecting before she had announced it.

"The whole time I definitely was thinking, Everyone knows, everyone can see,'" Beyonc revealed at the screening of her new concert DVD recently. "When you're pregnant, it's a little bit harder to breathe, so it was hard doing all the choreography and singing at the same time."