A pelvic ultrasound scan detects problems in the uterus and ovaries and pelvic region. By performing transvaginal ultrasound we can assess the pelvis for signs of any underlying gynaecological conditions that may impact on fertility and fertility treatment success rates, such as endometriosis or fibroids, as well as assessing the health of the lining of the womb and assessing the ovarian reserve by measuring the antral follicle count (one of the most sensitive tests available).