(((HUGS))) Keeping you in my thoughts, Laura!

Good that you're not in panic. You know, something similar happened to me; 8 years ago, I was diagnosed with a prolactinoma in my pituitary gland. It's still there, very small, and not growing so far. When I first heard the word "tumor", I was in a state of shock, and I guess you felt the same way, 'cause this is really something you don't expect... But once you realize it's most likely benign, you'll get used to the fact that there's something in your brain, and it's not so scary anymore.

Best wishes for your surgery, I'm sure you'll feel much better when that thing is gone!!