Hypersensitivity. Undiagnosed abnormal uterine bleeding. Known, suspected or history of breast cancer. Known or suspected estrogen-dependent neoplasia (eg, endometrial cancer or hyperplasia). Active or history of arterial thromboembolic disease (eg, stroke, MI) or VTE (eg, DVT, pulmonary embolism). Known thrombophilic disorders (eg, protein C or S, or antithrombin deficiency). Active or chronic liver dysfunction or disease. Pregnancy.