Additional Study Information: This is a study looking to evaluate how well a new hormone-releasing Intrauterine Contraceptive called LevoCept works in healthy, sexually active women. The study will consist of 6 study visits including a screening visit prior to enrollment and monthly telephone calls over the course of a year. The study visits will vary but mostly consist of physical and gynecological exams, urine pregnancy tests, and vaginal ultrasounds. Women who volunteer will also be given an electronic diary to keep daily along with instructions. The first visit will take about an hour. If you are eligible and you decide to participate, the other visits will take from 30 minutes to an hour. You will be compensated for your time and travel upon completion of each study visit ($50 compensation per visit).