Sarah - my midwife told me that you'd know if the forewaters broke as it's a '2 towel job', meaning you'd need too towels to absorb the fluid.

Didn't realise what she meant until the ob broke my waters when I was in hospital and I got up to go to the toilet, fluid just gushes out and keeps gushing, it's like someone has turned on a tap inside of you. The hindwaters seems like a bit of fluid at the time, but it's not really.