My first birth was 18.5 hours of labour. Midwife broke my waters because it took 5 hours for me to go from 4cm to 6cm.. About 2 hours later i had the epi and Syntocinon to try and turn the baby, then 6.5 hours later i had the vaccum, i was a hairs breadth from having a c/s. Personally i believe that i made the wrong choice with getting my waters broken. My ds was in the wrong position to birth easily and i doubt that it helped any. Neither did lying on my back for hours once i had the epi.