Simple nausea and vomiting affects 60-80% of patients during first 12wk of pregnancy<unk>  only affects 0.3-2% of pregnancies<unk>  has (rarely) been known to cause Wernicke's encephalopathy
Hyperemesis gravidarum
Placenta accreta
Gastroenteritis
Eclampsia
Biliary disease
Preeclampsia
Ectopic pregnancy
Postpartum hemorrhage