Hii Jeanette, I have had more laser treatmments than I can recall. I have had some discomfoort for a period after from time to time, buut not like you describe. But then I rarely have a headache either. I have also had three vitrectomies and several steroid injections in and around the eye. None of these is as bad as they sound, mostly no big deal. The biggest issue BY FAR is that the treatment (primarily thhe in eye injections) caused the development of cataracts which were horrible. Fortunately I have just recently had both cataracts removed, but I have been almost totally blind for almost a full year.
One thing to remember is that not all llasers are the same. The retinologiist I see has multiple locations I always go to the downtown Seattle office for laser. I did the one closer to me one time. The newer, better system in Seattle is less painful both during and after the treatment.
I have been battling retinopathy since Dec. of 2010. I am more than glaad to answer any questionss you might have.