RAPID EC - Rct Assessing Pregnancy With Intrauterine Devices for EC

Inclusion Criteria: * Females between 18-35 years old * In need of EC (had unprotected intercourse within 120 hours - 5 days) * Desire to prevent pregnancy for 1 year * Fluent in English and/or Spanish * Have a regular menstrual cycle (21-35 days) * Know their last menstrual period (+/-3 days) * Be willing to comply with the study requirements * Desire to initiate an IUD * Negative urine pregnancy test Exclusion Criteria: * Current pregnancy * Breastfeeding * Intrauterine infection within the past three months * Sterilization * Already have an IUD or contraception implant (Nexplanon) in place * Vaginal bleeding of unknown etiology * Known Gonorrhea or Chlamydia infection in the last 30 days (unless successfully treated at least 7 days prior to study entry) * Known abnormalities of the uterus that distort the uterine cavity * Allergy to copper * Use of oral Emergency Contraception in the preceeding 5 days