IT could be sinus if it hurts when she moves her head? I am no nurse or dr., but if you really feel she is in pain, I would take her.

Looking up the symptoms in kids 1 year or older they say
* Nausea and vomiting

* Headache

* Increased sensitivity to light

* Fever

* Altered mental status (seems confused or odd)

* Lethargy

* Seizure activity

* Neck stiffness or pain

* Knees automatically brought up toward the body when the neck is bent forward or pain in the legs when bent (called Brudzinski sign)

* Inability to straighten the lower legs after the hips have already been flexed 90° (called Kernig sign)