Good day, i have a terrible headache from the left side of my neck up to the the left side of my forehead and in my left eye ?

Sinusitis?: Focal facial pain in forehead and left eye could be a sinus infection/inflammation. As the body responds, lymph nodes at neck can become inflammed and cause head and neck pain as well as an overall feeling of fatigue and low fever. Try a nasal saline wash followed by an oral decongestant/spray decongestant. Use Acetaminophen for pain. See a Dr if it does not resolve in 3-5 days