Had it done no problems.
Take nurophen etc before and after.follow the advice the Dr gives best to have it on the Friday and have a few bags of frozen peas at hand. Keep taking pain killers, always good to have something a bit stronger.
Pee as much as you can, drink plenty of fluids then comes the bad part.
Shaking hands with the one eyed snake 
You’ll pass a bit of blood but that will pass 
Never had any problems