answer:Don’t be afraid to use the proper terms. “Part” is too vague and not really helpful. Often the area around your vulva will ache a little. When your period arrives, you will have sensations in your uterus and cervix possibly, plus the soft tissue in the area, including the muscles and ligaments. They can be almost imperceptible. Have you developed breasts, pubic hair and hair under your arms? Have you grown and developed a waist and hips? Those are the first steps. Your period should not be far behind. If you are really concerned, talk to your mom. You cannot say anything to surprise her; she was once your age, of course and was probably too embarrassed to talk to her mother.