As I got out of bed at 2am to go to the toilet because I woke up feeling a bit uncomfortable. Felt like a trickle, like I'd wet myself, and then got worse and seemed to keep coming for ages! Luckily we also have a wooden floor and it seemed to take forever to mop it up!
Contractions started not long after that and LO was born at 1.20pm, so about 11 hours later (would have been sooner had they not let me push for 2 hours before giving me an episiotomy, then born within 5 mins!)