A 30 year old woman presents with right iliac fossa pain. Quantitative BHCG is positive at 2500 IU. Her bladder is empty so you proceed to transvaginal ultrasound.
A patient in early pregnancy presents with pelvic pain and heavy vaginal bleeding. She has been bleeding heavily over the last hour. She tells you she had an ultrasound 2 weeks ago, at 5 weeks gestation which showed an intrauterine pregnancy, but was too early to detect cardiac activity.