I had an epidural with my first, and was incredibly keen to avoid one with my second. I found pushing with an epidural completely exhausting because I couldn't feel anything. The pushing part lasted over 2 hours (after ctx every 5 mins, day and night, for 3 days, eventually augemented by synto because I'd only reached 3cm) and I had no idea what to do. The whole thing felt completely unnatural to me -- artificial ctx and then medical paralysis from the waist down. Of course, when my son was born it was all forgotten and I'd never dream of saying it was some kind of traumatic experience, but the second time I was determined to avoid both synto and an epidural.
With my daughter, I was 40+13 and booked in for induction. 3 days of 5-min apart ctx again, getting me to 3cm (AGAIN! I suck at giving birth!). I arrived for my induction and was given the gel, despite being 3cm. They refused to break my waters because the baby's head wasn't engaged. Long story short, my own midwife came in on her day off to see me and broke my waters for me while she was there! I was 3-4cm when she did it, 10 hrs after my arrival at hospital.
As soon as I got off the bed, ctx came thick, fast and strong. Within half an hour there was no break between them, as noticed by the midwife. The pain was getting pretty bad by this point, but I didn't dare ask to be examined because I thought if they'd told me I was still 3-4cm I'd have given in and begged for the epidural. Eventually I felt such a strong urge to push I couldn't ignore it any more, even though I didn't know what it was meant to feel like because of previous epidural with the last birth.
The midwife sighed and rolled her eyes and told me to get on the bed and she'd examine me, but that there was no way I'd have dilated 6cm in less than an hour. She turned around to put her gloves on, and when she turned back she said "Oh, no need! I can see the baby's head."
She was born 5 mins later, an hour after my waters were broken, with no pain relief at all.
I would go through the second one again, any time. But never the first...