Immediate Versus Delayed Intrauterine Device (IUD) Insertion Following First Trimester Suction Aspiration Procedures

Inclusion Criteria: * Female * 18 years or older * Requesting suction aspiration for spontaneous or elective abortion * Intrauterine pregnancy documented with ultrasound. For women with a gestational sac, the gestational age (EGA) must be ≥ 5 weeks 0 days but ≤ 12 weeks 0 days based on the following criteria: * If no embryonic pole present: EGA (days) = mean sac diameter (mm) + 30 (Mean sac diameter =\[length+width+depth\]/3) * If embryonic pole is present: EGA (days) determined by Hadlock scale for measured crown-rump length * Desiring intrauterine contraception * In general good health * Willing and able to undergo informed consent * Willing to comply with randomization and study follow-up schedule Exclusion Criteria: * Pelvic exam with evidence of active cervicitis or PID (eg. purulent discharge, adnexal mass, significant cervical or uterine tenderness) * PID or sexually transmitted infection within the previous three months * History of pelvic Actinomyces * Unexplained vaginal bleeding * Uterine anomaly (eg. bicornuate uterus) * Leiomyomata that distort the uterine cavity * Known or suspected complete molar pregnancy * Current confirmed or possible ectopic pregnancy * AIDS without treatment (individuals with HIV/AIDS who are clinically well are not excluded) * Any prior surgical aspiration during this current pregnancy * Use of osmotic dilators (eg. laminaria) or misoprostol for cervical preparation during the aspiration procedure * Allergy to polyethylene * Allergy to levonorgestrel (for levonorgestrel-containing IUS only) * Allergy to copper (for copper T380A IUD only) * Wilson's disease (for copper T380A IUD only) * Current participation in another research study which would interfere with the conduct of this study