I was very keen to go into labour naturally, and started to do all sorts of things to bring labour on - long walks, with lots of stairs and hills, squats and lunges at home, hands and knees , on my knees over the ball, burning clary sage oil, having acupuncture. I can't say if any of it made the difference, but it was such a relief when I went into labour naturally at 40+4. I would redirect your energy into doing these kind of things, because stressing over something like this can't ever be good!