Toni Braxton will not be returning to her Las Vegas show -- "Revealed" -- at the Flamingo Hotel until at least next month. Was that thing still goin' on?! Un-break my heart!

The hotel says the show will remain dark until Braxton undergoes more medical tests. Last week, the singer experienced chest pains after a show, and was rushed to the hospital. Toni suffers from heart disease, and has been treated in the past for pericarditis, a viral inflammation of the heart.

Braxton is expected to begin performing again on May 6. Her divatude will return May 5.