Don Omar has cancer. The 46-year-old Puerto Rican singer – who is often referred to as the “King of Reggaeton” – took to Instagram to reveal in his native tongue that he is battling a type of the disease, which he did not disclose, but has vowed to beat. He wrote in a translated caption alongside a picture of his Orlando hospital wristband: “Today yes, but tomorrow I won’t have cancer. “Good intentions are well received. See you soon. #f*** cancer.” The Latin star is best known for classics including ‘The Last Don’, ‘Dile’, ‘Dale Don Dale’, ‘Danza Kudro’, ‘Pobre Diabla’, and ‘Salió El Sol’. Om…