Its not bad. the worst part was having them keep you awake for a time after. I had shoulder surgery and I found that way worse.
They knock you out. it sounds weird but your brain doesn't have nerve ending so you don't feel pain inside your brain when you wake up. they keep you awake for a long time after asking your name and if you know where you are and they look for signs of bleeding on the brain. get moving and doing things as quick as possible walk around your room if you can. I suggest using your brain as soon as possible it really helped my recovery.