I leaked with my first DD. They think it's because the baby's head can come down a bit & block it when you stand or something. My DH thought I wet the Bed coz when it started it wasn't very much! It stayed like that the whole labour. Stopping & starting. Ring & see if you should go in to be checked out coz if they have broken it can be easy to get an infection. If labour doesn't start within 24 hours of the waters breaking some docs will talk about induction too. So yeah, You should get checked out just to be safe.