Clipping surgery in 3 days

Went to ER today with the worse headache and BP through the roof (known aneurysm). They have pushed forward my surgery for two days time. Would love to hear anyone's advice on hospital stay and recovery. I have no real idea what to expect and would love to hear it from someone who has gone through it. My BP is still sky high even on meds. I'm sitting at 180/122 so there is some crappy risk factors heading into it. Far out I don't want to do this. I know I have to.