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To strip the membranes your cervix must already be dilated. It can have some effect to trigger labor. Most doctors prefer to induce by 41 weeks or certainly by 42 weeks to avoid the complications of postterm pregnancy.
A membrane (cervical) sweep is a vaginal examination during which your midwife will use her finger to sweep the neck of your womb to try to separate the membranes from your cervix (don't try this at home).Related links. 1  Early stage of labour.ometimes, despite trying all the alleged means of getting labour going naturally, your due date is replaced by an overdue date. Your midwife and the obstetric team may then want to up the ante and try to get labour started with medical interventions, such as a membrane sweep.