Obese women are significantly more likely than their normal BMI counterparts to experience failure of orally-dosed emergency contraceptives. The PI's preliminary data provides evidence for testing a dose escalation strategy in an effort to provide improved efficacy from orally-dosed emergency contraceptives in obese women. The overall project will be focused on both levonorgestrel (LNG) - and ulipristal acetate-containing emergency contraception but this protocol registration is for the LNG aspect of the study procedures.
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The Number of Participants in Two Treatment Groups (1.5mg Levonorgestrel and 3mg Levonorgestrel) With no Follicle Rupture at 5 Days Within One Menstrual (Treatment) Cycle.
Timeframe: 5 days post-LNG dosing