ocr: Resident and Staff Physician Patiant Education Chart Extra Protection During Fertile Phase Fertile Phase For women using the IUD, it Ovulation is useful to add a second method of birth control during the fertile phase - - for extra protection - - - - - a - - 7 17 27 Reprinted with permissionifomResident and: Staff Physician (c)1991-92, 19931 by Romaine Pierson Publishers, Inc.