if you are not in established labour 24 or so hours after your waters have gone, then you are at an increased risk of infection and will be advised to consider induction/augmentation of labour
you don't need to do much at the moment, you've advise labour ward that things are happening, make sure your bags are packed and get on with the rest of the day!!
could be hours and hours before you need to go to hospital. you need contractions every 3 -4 minutes lasting at least 50 + seconds, and you need to concentrate on them !
make sure you eat and drink , wee & poo, and rest !
your body will let you know when it is time to pay attention, if you are finding it harder to cope then do call the labour ward again, but home is the best place to be before you are in established labour, or you are going to end up being sent home again from hospital which is disheartening.
just potter on and wait to see how things progress
if nothing happens over night, you can discuss the next step with the midwife
best of luck!