First birth - horrific, diarrhoea, throwing up, worst period type pain of my life, I was punching the tiles in the hospital bathroom.
I'd been to NCT classes and the shock of what the pain was actually like freaked me out. Then they said I was only 3 cm dilated and I went into full on panic. I had gas and air - threw up constantly, had pethidine, threw up and got about 20 mins sleep then pain back. Had epidural - fantastic. Labour was 27 hours, wish I'd gone straight for the epidural. The whole experience scarred me and I felt I'd somehow failed (god knows why). I was in shock I think for several months and got pnd.
2nd birth - gas and air was brilliant, no sickness this time. They also put a mobile epidural in right from the start (I'd begged) but I didn't start it until I needed it (you press a button for drugs). It was a totally different experience, I had been induced but it was very calm and I went from no dilation to 9cms in 3 hours. I felt a weird pressure down below and out came the baby!! Felt much better afterwards this time, much more together and happy.
So, I wanted to tell it like it was (at least for me) because I think unrealistic birth expectations (perhaps gained from nct classes sorry) can sometimes not prepare you correctly. Just go in with an open mind and if you need pain relief then ask for it. Everyone has pain relief for other ops so no guilt, no worry, no trying to be perfect.
And congratulations and good luck