TY - CHAP M1 - Book, Section TI - Contraception A1 - Cunningham, F. Gary A1 - Leveno, Kenneth J. A1 - Dashe, Jodi S. A1 - Hoffman, Barbara L. A1 - Spong, Catherine Y. A1 - Casey, Brian M. PY - 2022 T2 - Williams Obstetrics, 26e AB - The puerperium offers an excellent opportunity to provide effective contraception. For mothers who are nursing exclusively, ovulation during the first 10 weeks after delivery is unlikely. Nursing, however, is not a reliable method of family planning for women whose infants breastfeed only during the day. Moreover, waiting for first menses involves a risk of pregnancy, because ovulation usually antedates menstruation. Certainly, after the first menses, contraception is essential unless the woman desires pregnancy. SN - PB - McGraw Hill CY - New York, NY Y2 - 2024/04/20 UR - accessmedicine.mhmedical.com/content.aspx?aid=1190762510 ER -