The day I went into latent labour was nothing out of the ordinary, had a sweep in the morning and felt normal all day, contractions started at 7pm and from there kept coming, getting increasingly more painful and longer for four days and I got progressively more tired and weepy obviously from not sleeping and being in constant pain (contx on day two and three of early labour were just as painful and just as regular as contx at 5cm dilated in hospital!)
The only thing I can pinpoint that was different in the time was that at 3.30am on the Sunday morning (been in labour since the Wednesday evening) I started to feel really shaky and a bit sick, like when you've had too much caffeine or are really nervous about something, it came on really suddenly. Then I had a panic attack and started crying and hyperventilating because I thought I was going to be sick, and suddenly decided that a baby is a really bad idea, what on earth have we done, I don't want this anymore! OH hauled me up off the couch to give me a cuddle to try and calm me down, and just as he managed to get his arms round me my waters broke. As soon as they went and it was hospital time it's as if the panic lifted and my head totally cleared.