You should have a pre-surgical appt several days before your CS is booked. On that day you should expect to see someone from the obstetric team (probably a registrar) AND someone from the anaesthetists team. Ask them about it then (you can ask to see the consultant - who is the head anaesthetist doctor) and use this opportunity to discuss your fears as well as a plan on what can be done. They may also schedule you earlier on the list so you don't have to wait as long on the day. Good luck.