An elective c-section is genereally not offered to women during their prenantal care. As a patient you are allowed to ask any question that you want to ask. Though your doctor or midwife may refuse your request. They may want to talk to you in detail about why you want to have elective surgery to give birth and try to find a way to ease your concerns or fears.
According to the Listening to Mothers II Survey, very few mothers are actually initiating the discussion about elective cesarean section. The surprising news was that doctors were more likely than the mothers to have that discussion.
If your practitioner agrees to perform an elective c-section, it should not be perform until you are past 39 weeks of pregnancy to reduce the risk of preterm delivery of your baby. It is also important to note that your insurance company may not cover elective c-section for no medical reason because of the added risks of complications to you, your baby and future pregnancies. Be sure to discuss this with your insurance provider.
Source: Timing of elective repeat cesarean delivery at term and neonatal outcomes. Tita AT, Landon MB, Spong CY, Lai Y, Leveno KJ, Varner MW, Moawad AH, Caritis SN, Meis PJ, Wapner RJ, Sorokin Y, Miodovnik M, Carpenter M, Peaceman AM, O'Sullivan MJ, Sibai BM, Langer O, Thorp JM, Ramin SM, Mercer BM; Eunice Kennedy Shriver NICHD Maternal-Fetal Medicine Units Network. N Engl J Med. 2009 Jan 8;360(2):111-20.