RecruitingPhase 4Drug trialEndometriosis and Microvascular Dysfunction; Simvastatin and DuaveePurpose: To determine the effects of SERM and simvastatin interventions on endothelial dysfunction in women with endometriosis. Hypothesis: Treatment with the SERM (bazedoxifene + conjugated estrogen) or with simvastatin will decrease systemic inflammation and improve specific measures of cardiovascular function including endothelium-dependent vasodilation.