I'm trying to gauge if it's true about third labours being a bit of a wild card - or if they are generally even quicker than the second.
My second took 3.5 hours from the first inkling. I'm now 36/7 weeks with my third and have apparently got an irritable uterus - so I was up last night having quite painful, but not-terribly-helpful contractions for a couple of hours.
The midwife I saw today for routine check said, don't come in unless you have regular pains for at least 2 hours.
I'm a bit confused, maybe she wasn't aware my last labour was so short, but anyway - is this one likely to be quicker? And when do I call - I don't want to wait two hours if the baby will be here in one! 
Thanks x
ps am booked for homebirth, other MW recommended it as hospital is a bit of a trek.