You may first learn about your disorder in puberty, when your menstrual periods don't start even after you've developed breasts and have underarm and pubic hair. It's also possible that you or your parents learned about it when you were a baby because you had no anal opening. Your vaginal agenesis may have been discovered when you were a little girl during an examination for a kidney problem.
Depending on your age, your Mayo Clinic pediatrician or gynecologist will diagnose your condition based on a physical examination. After your exam, your doctor may order blood and imaging studies to help determine your treatment choices.