I am 39 now years old 3 day ago a have a fever and after that a have a rash all over my body its can't be a dengue ?

No: You would be very sick with dengue fever. See your dermatologist for the answer.

Dengue: Symptoms of dengue can include a high fever; joint, muscle or bony pain; severe headache &/or eye pain; rash and signs of bleeding like bruising easily, bloody nose or gums, or red petechiae on skin. Per NIH - "an incidence of about 178 symptomatic dengue episodes per 100,000 population" in the Philippines. See your physician for accurate diagnosis.