i've had this done, and found it to be pretty easy to be honest. pain afterwards was reasonably minimal - felt pretty much the same crampy feeling as i'd had beforehand when the gallbladder was playing up! i had to stay in overnight for monitoring, but that was related to the fact that i have tachycardia and they wanted to make sure that had settled down post-op - but i was off pain killers within 24 hours and back to normal life within a couple of days...

it's not something to let yourself stress about - good luck!