Side Effects (see also Managing Any Problems)

Some users report the following:

  • Changes in bleeding patterns, including:
    Bleeding changes are normal and not harmful. If a woman finds them bothersome, counseling and support can help.
    • For breastfeeding women, longer delay in return of monthly bleeding after childbirth (lengthened postpartum amenorrhea)
    • Frequent bleeding
    • Irregular bleeding
    • Infrequent bleeding
    • Prolonged bleeding
    • No monthly bleeding

    Breastfeeding also affects a woman’s bleeding patterns.

  • Headaches
  • Dizziness
  • Mood changes
  • Breast tenderness
  • Abdominal pain
  • Nausea

Other possible physical changes:

  • For women not breastfeeding, enlarged ovarian follicles

Known Health Benefits

Known Health Risks

Help protect against:

  • Risks of pregnancy


For definitions of bleeding patterns, see "vaginal bleeding" in the Glossary.