NORMAL 1ST TRIMESTER Long axis pelvic view demonstrating an intrauterine pregnancy with yolk sac and visible fetal heart beatFetal pole with heart beat and yolk sac deep to it SUBCHORIONIC HAEMORRHAGE Long axis pelvic view - gestational sac with fetal pole just about visible and subchorionic haemorrhage cranial to it Subchorionic haemorrhage measured in pelvic long axis, gestational sac is caudal to it ECTOPIC PREGNANCY Ruptured ectopic pregnancy with free fluid in pouch of Douglas