What Causes Headache Accompanied By Nausea, Dizziness And Fatigue?

I have been experiencing daily headaches for at least the last month, possible longer. They start around noon or 1pm and can last until I got to bed for the night around 10 or 11pm. They are always on the right side of my head in the sinus/eye socket area and lately have been accompanied by nausea and sometimes dizziness or fatigue. In the last couple of days the nausea is becoming more aggressive. Ibuprofen and acetaminophen have not been effective. Have also tried generic brand migraine medicine. What might be causing this and what can I do about it??