i've had versed and it works well.
i was very nervous too but the dr put me at ease. they also numb the area first and i didn't feel much pain at all.

i had 2 O-bands and my dx was confirmed. i was however, initially dx'd just by my neuro exam and mri.

remember to drink lots of fluids before and after to stay hydrated. it will help prevent any LP headache. drinking caffeine will also help. when you get home lay flat as much as possible for 24 hrs. they should give you instructions.

you'll be fine. take some deep breaths in a quiet, darkened environment. it helps you de stress.