I have had a headache for the last two days, loss vision, stiff neck at the base of the scull and can t lift my head when lying down unless i physically lift it with my hands. Got really thirsty but feel a little sick at my stomach. drank a lot of ice tea, gallon or so. ER Dr. gave me a migrane shot. still have stiff neck and its weak, and vision is ok. Not sure if it s a migrane or something else. What s your opinion and advice?