This document provides information on various sexually transmitted infections (STIs) including trichomoniasis, chlamydia, gonorrhea, syphilis, HPV, herpes, HIV, and bacterial vaginosis. It also discusses infertility, treatments for infertility in men and women, abortion, ectopic pregnancy, hyperemesis gravidarum, gestational trophoblastic disease, incompetent cervix, placenta previa, abruption placentae, and disseminated intravascular coagulation.