Ayala sang a few songs Thursday night at Brownsville's Sombrero Festival, but then became ill and had to sit down.
Paramedics examined the singer, who was removed on a stretcher and transported by ambulance to Valley Baptist Medical Center in Brownsville.
Pedraza says the singer spent a "few moments" in a hospital, but was released.
The entertainer was resting and recovering at his home in Hidalgo.
