Chlamydia is often called a “silent” disease because about 75 percent of women and 50 percent of men who are infected have no symptoms, according to the U.S. Centers for Disease Control and Prevention. If symptoms do occur, they usually appear within one to three weeks of exposure and may be mild.

Some signs and symptoms that may be present in people infected with chlamydia are:

• Abnormal discharge from the penis or vagina
• Burning sensation during urination
• Lower abdominal or back pain
• Nausea
• Fever
• Pain during intercourse
• Burning or itching around the head of the penis
• Swollen or tender testicles
• Bleeding between menstrual cycles
• Proctitis (inflammation of the rectum)