I havent it done so thats what doctors say:
Stripping the membranes
Your practitioner may offer to "strip your membranes" to help start your labor. This procedure usually feels like a vaginal examination, although it sometimes can be painful or cause cramping. The practitioner places her gloved finger through the cervix and sweeps the amniotic membranes free of their attachment to the lower part of the uterine cavity. This process is believed to release hormone-like substances called prostaglandins, which help to ready your body for labor.
While some experts believe that stripping the membranes causes you to go into labor that day, the only research on this procedure was done by a group of midwives who stripped the membranes of a group of their patients at every visit to the office after 38 weeks gestation. Their findings showed that patients who had this procedure were less likely to go past their due dates. A the procedure
at 3:28 PM on Apr. 23, 2009