Hi,
I have migraines once and awhile that seem to be caused by stress. My CF doc had me get a CT scan of my sinuses and had the ENT doc look at it to make sure it was not a sinus issue. The ENT said of course, having CF I have some blockage in my sinuses, but his opinion was that it wasn't causing the migraines. It would be worth having a scan and consulting with an ENT to rule out sinus issues, but not all CF patients have issues with sinuses that lead to migraines, nor do all CF patients have issues with sinuses at all. I have found relief from midrin (prescribed for migraines)... I usually have serious nausea and different visual lights, distortions, etc. along with a terrible headache making me sensitive to light/sound. If this sounds like what you're having, it may be helpful to try a medication to control the migraines whether they're caused by sinuses or stress or anything. Good luck!