Thank god i read this thread! can you believe i've been on 2 NHS ante natal classes, one hospital tour, a whole intensive weekend NCT course, read about 3 books and god knows how many pregnancy leaflets and just realised i didn't know when to go in either!! just shows you.
The one thing i would reiterate is that even if you have no contractions but your waters break you must go in straight away, my MW told me the other week not to even have a bath / shower etc but just to head straight in. x