A Clinical Guide for Contraception

abortion activity adolescents associated bleeding blood breast cancer breastfeeding cause cervical changes choice clinical clinician compared complications condoms containing continue copper cycle decrease Depo-Provera device diaphragm disease dose early ectopic pregnancy effects efficacy emergency contraception estrogen evidence experience factors failure female fertility formulations Health higher hormone immediately impact implants important incidence increased increased risk indicated infection insertion intrauterine lactation less levels levonorgestrel low-dose lower major menstrual method months myocardial infarction Norplant Obstet Gynecol occur older oral contraception ovarian ovulation patients pelvic performed period pills placed possible postpartum pregnancy prevent problem procedure progestin protection reason relatively release remain removal reported risk sexual side effects significant smoking spermicide STDs sterilization steroids taking tion treatment tubal tube United users usually uterine vaginal weeks women young