agree with Midna about how you feel when you are overdue. I was 2 weeks overdue and I honestly didn't care about what I was about to go through.
After 2 sweeps, over 24hours of contractions (7 on a syntocin drip!), 3 catheterisations, numerous local anaesthetic injections in my nether regions prior to the episiotomy, the scalpel cut for the episiotomy, a hook stuck inside me to finish my waters off, etc, etc, you just want the baby OUT! anyway possible and it doesn't matter how much it hurts!
It's amazing what you can put up with, and in a twisted kind of way, I'm really proud of myself. Honestly don't worry about the pain, yes it's pretty bad but the only way to stop it is to get the baby out. Worrying about it won't help you, it'll just slow things down.
K.xx