Don't worry, Dengue Fever is a Self limiting disease within 5 to 7 days. But monitoring of platelets count is required.
In case of emergency contact nearest medical centre.
Next Steps
You need plenty of liquids to rehydrate body properly like lemon juice diluted with water, coconut water, Oral rehydration salt, butter milk - Chhachh lassi etc.
Health Tips
You need complete bed rest for 7 days.