I am a complete F-R-E-A-K when it comes to needles hun... but after having contractions for six hours I decided it was time to get one... they told me to get in then or in 4 hours because the specialist had somethign to do, so I opted to do it.
My mom and cousin held onto me from the front and they try to get a feel of your contractions so they know when toi give it to you.
If it so happens that you do decide to get one, just completly relax, I know thats hard under the circumstances but the more relaxed you are the easier it is on you...At first there was strange pressure but I hadn't even realized she'd done it and then I just didn't feel any pain any longer... it was amazing!