NORMAL 1ST TRIMESTER

Long axis pelvic view demonstrating an intrauterine pregnancy with yolk sac and visible fetal heart beat

Fetal 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