Chlamydia infections are most often asymptomatic. When Chlamydia gets into the urethra of your penis, it can cause burning when you pee and a thin, watery discharge. Typically, if symptoms develop, they will appear within 5 to 10 days of contracting the infection. Occasionally, Chlamydia can spread up the urethra and infect the epididyma, the tubes that collect sperm from your balls. This will cause one or both balls to become swollen and painful.

Chlamydia can also infect the anus and rectum. This can happen if a guy has Chlamydia in the urethra of his penis and he fucks another guy without a condom. He does not have to cum to deposit Chlamydia in the anus. Usually, Chlamydia inside the anus does not cause symptoms. As a result, guys can have Chlamydia and not know it. If symptoms do occur, you may have some rectal discomfort or feel like you need to move your bowels when there is nothing there, or you may notice some discharge from your anus.

Chlamydia can also live at the back of the throat, delivered there during oral sex. It never causes a sore throat, and so is always asymptomatic. As a result, you can have Chlamydia in your throat and not know it.

Chlamydia is diagnosed by detecting the bacteria itself or the bacteria’s DNA. If you have Chlamydia in your urethra, you will wash a few of the bacteria out as you start to pee allowing it to be detected in your urine. Your doctor or nurse will give you a small bottle to pee in. Make sure you start peeing in the bottle to catch the first amount of urine, and pee only a little, about 10 mL. The more you pee in the bottle the more you will dilute the bacteria making them harder to detect. To check for Chlamydia in your throat, your doctor or nurse will use a swab to collect bacteria from the back of your throat and tonsils. Your doctor or nurse will also insert a swab into your anus to collect a sample from there. The urine sample as well as the swabs taken from your throat and anus will be sent to the lab. Results are usually available within 2-7 days.