Vaginal bleeding
Ectopic Pregnancy, heterotopic pregnancy
First Trimester Abortion (complete, threatened, incomplete, septic, etc.)
Implantation bleeding
Fibroids
Cervicitis
Gestational trophoblastic disease
Ectopic Pregnancy, heterotopic pregnancy
First Trimester Abortion (complete, threatened, incomplete, septic, etc.)
Implantation bleeding
Fibroids
Cervicitis
Gestational trophoblastic disease
Hyperemesis gravidarum
Gastroenteritis
Biliary disease
Ectopic pregnancy
Gastroenteritis
Pancreatitis
Appendicitis
Hepatitis
Peptic ulcer disease
Pyelonephritis
Acute fatty liver of pregnancy
HELLP syndrome
Gestational trophoblastic disease (may present with intractable vomiting)
Thyrotoxicosis (may present with intractable vomiting)<unk>
Molar pregnancy
Vaginal bleeding
First trimester abortion
Ectopic Pregnancy, heterotopic pregnancy
Septic abortion
First Trimester Abortion 
Ovarian hyperstimulation syndrome
Implantation bleeding