A 30 year old lady presents with her husband as they have not managed to conceive for the last 18 months. She reports that her periods are irregular, with a menstrual cycle every 6 -8 weeks. There is no intermenstrual, postcoital bleeding or abdominal pain. Past medical history includes Acne and Asthma. She had a pelvic ultrasound privately one year ago due to fertility concerns which was normal. Her mother had ovarian cancer.
What is the most likely diagnosis?