I was induced with a cooks balloon, aka medieval torture device, went from 0 - 100 on the contraction front, was supposed to go home and 'relax' for the next 24 hours and then go back in but by the time we got back from the hospital (15 min drive away), we had to go straight back in, whereupon they removed the torture device and I had 14 hours of contractions lasting a minute with about 45 secs in between.
Sweating, vomiting in between each one, and only got to three cm dilated in that twelve hours.
I think the fear of knowing what was coming in that 45 second break was worse than the actual pain. But it was like this unbelievable burning pressure, of bitter (best word I can think of to describe it) period pains x100 that spread from my bum at the way up to the top of my ribs. Gas and air, pethidine and laughably, paracetamol didn't touch the sides. It also felt like time was standing still.
I was so relieved when my waters broke and there was meconium in them (I know that's awful, but I just remember thinking thank god, now they have to do something about it). So they took me down for an epidural and the drip, and the contractions seemed to ease off a bit, think it was because I knew the pain would be over soon... Then slept for a few hours and woke up to be told to push, could just see the waves of contractions happening on the machine, I remember laughing and joking that I couldn't feel a thing!
The worst pain after that was in my head during the pushing, felt like my head was going to explode with the pressure. Didn't feel the episiotomy or the ventouse delivery. But once the drugs wore off, the soreness kicked in. That's another thing no-one really warns you about (probably for good reason), the discomfort and pain afterwards. I couldn't sit down for a week and couldn't walk properly for about three.
However, as PP have said, Mother Nature is designed to make you forget about the pain, and you sort of block it out. And plus, for most people, yes it is the worst pain you will probably ever experience, but there is at least an end in sight to it (not that you remember that whilst in the throes of contractions).