Casea S Contraceptive Implants (Casea S) Trial

Inclusion Criteria: Participants may be included in the study if they meet all of the following criteria: * willing and able to provide signed informed consent * female between 18 to 45 years of age (inclusive) * healthy based on results of medical evaluation including medical history, vital signs, and physical exam * has regular menstrual cycle (21 to 35 days) * not at risk for pregnancy (i.e., sterilized) * has a Body Mass Index (BMI) of 18 to 29.9 * provides normal mammogram results within the last year before enrollment for women 40 or older * is willing and able to comply with all study requirements and return to the investigational site for the follow-up procedures and assessments as specified in this protocol * Part 2 participants only: has daily access to a smartphone, tablet, or computer with internet access. Exclusion Criteria: Participants will be excluded from participating in this study if they meet any of the following criteria: * has multiple risk factors for cardiovascular disease (e.g., smoking, diabetes, obesity, hypertension, high LDL (low density lipoprotein), or high triglyceride levels) * has current or history of ischemic heart disease or cerebrovascular disease * has current or previous thromboembolic disorders * has systemic lupus erythematosus * has rheumatoid arthritis on immunosuppressive therapy * has migraine with aura * has undiagnosed abnormal vaginal bleeding * has known or suspected breast cancer, history of breast cancer or other proges…