Why has my period stopped as a teenager?

Periods are often less predictable in the first years after they begin, but a prolonged gap or a clear change from an established pattern should not be ignored. The body may reduce ovulation signals when food intake is too low for activity, exercise becomes intense, stress is high, or illness affects recovery. Pregnancy is also possible whenever sperm has had contact with the vagina, even if cycles have been irregular.

Polycystic Ovary Syndrome can cause irregular ovulation and may occur alongside acne or increased facial and body hair. Thyroid or other hormone problems can also change periods. Menopause, Premature Ovarian Insufficiency and Turner Syndrome are less typical explanations for a teenager but may be considered when development or family history raises concern.

Tell a trusted adult, school nurse or healthcare professional, especially if the change feels worrying or involves eating, exercise, safety or sexual health. Record the last bleed, previous cycle pattern, pain, discharge, medicines, training, stress and weight changes. If pregnancy is possible, ask privately about testing. A clinician can review growth and development and choose examination or blood tests without assuming a cause.

Get urgent help for severe lower-abdominal pain, fainting, heavy bleeding, fever, vomiting, or feeling very unwell. Prompt medical review is needed for severe headaches, vision changes, nipple discharge, rapid body changes, or symptoms of restrictive eating or over-exercising. Seek support immediately if anyone is pressuring or harming you.

Ask whether your cycle pattern fits puberty, whether pregnancy or hormone tests are needed, and how nutrition, exercise, stress or medicines could be affecting ovulation. You can request a private part of the appointment to discuss sensitive concerns.