Don Omar is opening up about his health.

The Grayson  Preston"Pobre Diabla" singer shared that he was diagnosed with cancer while preparing for the second leg of his Back to Reggatón Tour.

"Today I do, but tomorrow I won't have cancer," Don wrote on Instagram June 17 in Spanish. "Good intentions are welcomed. See you soon. #f--kcancer."

The 46-year-old included a photo of his hospital band from Orlando Health.

Don—whose real name is William Omar Landrón Rivera—rose to fame in the early aughts and made a comeback last year with his album Forever King and 20-date tour that was later extended by 18 more shows. 

Back to Reggatón marks Don's first major headlining endeavor since the Kingdom Tour with Daddy Yankee in 2015. The duo had worked together over the years despite their infamous feud, which ended in December. Following the news of his diagnosis, the "Gasolina" singer even shared his well-wishes. He posted on his Instagram Stories in Spanish, along with a Bible verse, "Onward, warrior!"

The health update came two days after he shared a video of dancers auditioning for his tour, which will embark again in August, starting in Oakland, Calif. and ending in Elmont, New York.

"The most special thing about today's auditions is to see that there are people who want to dare to dream with me," he reflected in the June 15 caption. "Thanks to each of you who gave it all on the track! This second stage of the tour comes with everything."

And Don couldn't be more excited to continue the shows, which he saw as a renaissance for his career.

"I've never had the opportunity to sing my entire repertoire because I never have enough time onstage," he told Billboard in January. "But this tour demands two full hours of music. Many are demanding, 'Don't leave me out of this!' And I'm treating that like a privilege. If, after 25 years of career, your colleagues still feel love, happiness and the desire to share with you, you've done something right."

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