According to the American Stroke Association, warning signs of stroke that we should know include: sudden numbness or weakness of the face/arm/leg/one side of the body; sudden confusion, trouble speaking or understanding; sudden trouble seeing in one or both eyes; sudden trouble walking, dizziness, loss of balance or coordination; and sudden, severe headache with no known cause. IN your case, you have been experiencing your symptoms for some time now, and stroke usually occurs suddenly. If prescription medications do not help, try complementary and alternative medicine. Biofeedback therapy, self-hypnosis and acupuncture have shown positive results to headache sufferers. Take care and best regards.