Gamma Knife and still having severe headaches

I see so many of your discussions and they make my severe headaches seem not so serious. I am having a hard time functioning on a daily basis going to work and concentrating; i am always tired and want to lay down with with an ice bag. i got on this website to talk to someone to see what the side effects were and how long they might last;if any of you had severe headaches for a long period of time after the gamma knife treatment, i would appreciate hearing your story; for those of you who have experienced so much more, i feel so bad for you and wish you the best of luck.