My experience was all over the shop!
I went in (for an induction - baby was overdue and starting to not fare very well). I was a bit nervous but on the whole looking forward to it - had images of birthing pools and dim lights and loveliness.
The 'cramping' they told me to expect started and I got stressed very quickly (they told me the induction was unlikely to work first time round but I wold experience some mild crampings as everything readied itself). I lay on my bed thinking 'If this is cramping labour is going to kill me'. I dutifully took the paracetamol the midwife gave me which didn't even touch the sides of the pain. No wonder - when they examined me an hour later I was over half way. Induction happened fast! And at that point I got much calmer because now I knew I was in labour and not just having mild cramps, I thought, I can do this and it will all be wonderful after all. (I can state with some authority that paracetamol does not work as pain relief in labour, for anyone considering it!)
So success for mind over matter at this stage. I used G&A and drifted in and out of sleep for the next six hours while my husband watched movies. I was in pain but it was easy to manage and I was quite happy and contented.
Then I got to the end bit and they said 'baby will be here in the next twenty minutes'. Only she wasn't despite all the pushing and exertion. And from here it went very wrong. I had to be examined as they couldn't work out why the baby appeared to be crowning but going no further. I had SPD and it was tat rather than the birth which caused me more pain than I could have ever imagined. At that point, the G&A failed me, and I was screaming in sheer agony. They gave me pethidine and I couldn't tell the difference. They tried a local anasthetic which also didn't make a blind bit of difference. I had a few minutes where I would quite happily have taken my own life such was the blinding level of pain.
I have no idea how long it went on for because I lost all sense of everything - I had no idea who was in the room or who said what or what they planned to do. I know it was SPD not the birth that did this but it is all wrapped up in my head into one thing. I didn't feel the birth itself at all. They suctioned the baby out and discovered that she had the cord wrapped round her neck, which was basically holding her where she was. I was so consumed with pain that I couldn't hold the baby - they popped her on my chest for a fraction of a second - I registered that she was there but couldn't move anything to hold her, and didn't register I should be holding her. They whisked her off anyway to check her out so the next I saw of her she was wrapped in a towel and had a hat on.
We'd like another baby but going through this again scares the s* out of me -not sure I could do it. So will be announcing the SPD right from the start and insisting on all medical procedures available! I want to be in a place where I can remember clearly holding a seconds-old infant.
I tell everyone now. Not because of the birth but because I feel angry that SPD (which wasn't really taken seriously by the midwives) had such a massive impact on the whole thing. It robbed me of those first moments with my daughter that i can never get back. Maybe, just maybe, if I had had support with the SPD right from the start, then it needn't have got this far.
For me, this all shows that you can have all the positive thoughts in the world, and the confidence (I did, even half way through!) but that if something goes wrong, you're buggered and it can turn into the experience from hell in a second, and there's nothing you can do about it except try to get you and your baby out of it alive.