I've had 3 (planned) c sections, the first 2 were booked in at 39+5 and 39+6, but both times I went into labour at 38 weeks, so they then became emergencies. With my third, my midwife wanted me booked in at 37 weeks so to avoid another emergency, my consultant said they wont usually book you in until at least 39 weeks, but agreed with me midwife and compromised and booked me for exactly 38 weeks, which is when he was born. x