Hypothetically if your placenta is low lying, you do not want to go into labour at all hun, because as soon as it starts you risk the placenta bleeding as it is right near the cevix as it opens. they will more than likely gievn that you went into natural at 37+4 last time be looking at delivery at 37 weeks no later.....you do not want to go into labour with a low lying placenta of that nature.