May lagnat si 11-month old baby

Patulong po. May sinat po si LO since kahapon. Then kagabi umabot hanggang 39°C yung temp nya. I give him Calpol and spongebath. Kelan ko po sya ipapabloodtest? Pwede bang hintayin ang 3 days muna as they said for dengue testing? #adviceappreciated #firsttimemom