A Chlamydia infection often has no symptoms whatsoever. If symptoms do appear, then one to three weeks after infection you may experience discharge from the urethra, itching and burning when urinating. An untreated Chlamydia infection can spread to other parts of the body.
In men, the vas deferens (spermatic ducts), prostate and epididymis can become inflamed. In women, the infection can spread to the abdominal cavity and the fallopian tubes. In some cases, an untreated Chlamydia infection can lead to infertility.