Chlamydia

A sexually transmitted disease caused by bacteria that often has no symptoms. When symptoms occur, they can include burning during urination, discharge and bleeding during intercourse for girls. For guys, pain during urination and a watery discharge are common symptoms.

Chlamydia is the most common STD in the United States and is the leading cause of preventable infertility and ectopic pregnancy since it can cause scarring and damage to the female reproductive system if it is not treated early. Because chlamydia is a bacterial infection, it can be cured with antibiotics.