In my opinion it's the med. I've been on ssris for a long time, and a tricyclic, and all of them gave me occasional headaches, and boy are they doozies. Don't seem to go away easily.
Please take a look at this new MH group for questions just like yours. I think you like it. The link is below.
Peace
Greenlydia
http://www.medhelp.org/forums/Psychopharmacology/show/701
It is recommended that you avoid drinking alcohol while taking this medicine.