Hi,
I too just had Gammknife in August. It had only been 11 months since my last MRI, and I wasn't having any symptoms, but I knew our insurance would be changing so I asked the doc if we could do an MRI because I didn't want to worry about any authorization problems with a new insurance. Well, lo and behold thar she was, an 8mm little bugger just hangin out in my right occipital lobe! By the time I got a referral to UCSF and actually had the Gammaknife, one month had passed and the tumor had grown another 3mm.
The procedure itself wasn't bad at all, just took a long time to get set up. I also asked for extra anesthetic at the points where the frame is attached to your head because I knew from previous experience that I was hard to numb.
Right after I was all done I had my husband take me out to get something to eat and I felt fine. The very next week I was out conditioning my horse for an endurance ride and never experienced any problems at all.
I think the hardest part has been waiting for my follow up MRI which I will have in November. I just try to stay super busy, so I don't dwell on all the what-ifs and just cherish each and every day!
You can do this, especially with all the expert/brain mets survivors on this board, you will always have lots of support. Don't know what I would do if I didn't have all the support and wisdom from so many here.
Don't know if you ever saw the movie with Bill Murray called "What About Bob", but I always think about that when I have to do something that's hard and I laugh to myself and think Baby Steps!, Baby Steps!

Kim