Initial ultrasound:
- The uterus is retroverted.
- The endometrium is not thickened. No decidual reaction is demonstrated.
- No gestational sac is seen within the endometrial cavity.
- Irregular gestational sac identified within the cervical canal.
- Mean sac diameter 5.5mm, corresponding to a gestational age of ~4 weeks.
- Yolk sac identified, 2mm in diameter.
- No fetal pole demonstrated.
- No FHM identified.