The document presents information on several medical conditions that can occur during pregnancy:
1) Hyperemesis gravidarum is severe nausea and vomiting during pregnancy that prevents adequate food/fluid intake and can cause weight loss and nutritional deficiencies.
2) Ectopic pregnancy is when a fertilized egg implants outside the uterus, usually in the fallopian tubes.
3) Gestational trophoblastic disease involves abnormal cell growth in the uterus during early pregnancy that can cause bleeding and other symptoms.