Started having period pain like cramping at 10pm the night before, then they got stronger by lunch time the next day and had a show, went to hospital around 7pm and they broke the waters, then a big blur of pain, and birth at 2.23 am, i only count labour length from when i went to hospital though, before that it was bearable.
One note though as hard as it is when the hospital tells you its too early and get some sleep, listen to them. I was awake for 2 days and i think that had a lot too do with my not coping and pain tolerance. This time around i am hoping i listen to my own advice and sleep as much as i can beforehand.