"Uneven" Pupil Dilation and Chronic Headache

Posted By Kimberly on December 10, 1998 at 17:20:54:







Thanks for a great service... I hope you can help me a bit as you've helped so many others.
I am a 5'8" tall, 133-lb. female, age 26, taking NO meds, no major illnesses in my history.
For the last 6 months or so, I have daily headaches and "burning" pain, primarily located at the back of my neck on my head's right rear side.  Usually, the pain is dull but relentless, occasionally it is sharp enough to make me stop what I'm doing.  At one point, I also had pressure-type pain around my eyes, as if someone was pressing binoculars to my face.  (This condition has lessened.)  Blood and urine testing by my PCP and an eye exam from an opthamologist revealed nothing... perhaps some "common eyestrain" and a prediction that my headache pain is of the tension variety.  
Within the last couple of days I've been mildly to severely nauseated but not dizzy or without balance -- an EPT revealed I am not pregnant.  About 2 months ago and then just last evening, two different people pointed out to me that my left pupil stays enlarged while my right one expands and contracts normally in response to changes in light.  My vision feels "funny" (I apologize for being so vague, but I can't really articulate what is different than normal) but the eye doc said my lens prescription is right on target.  
So - - Here are my questions...  1.  I have an appointment in 3 weeks with a neurologist. Is that longer than I should wait to get a specialist's advice?  2.  I have spent considerable time searching the net and have learned of conditions from meningioma to syringomyelia that scare me to death (hope not!) and wonder if there are conditions that are not-so-bad that relate to this suspicious combination of symptoms.  3.  When I do see this neuro, are there specific questions I should be asking to ensure we are keying-in on the "right" tests or possible diagnoses?
Thanks for enduring this long message and for any insight you can offer.