Chlamydia is a bacteria which is almost exclusively transmitted via sexual contact. For people with a cervix, 70% will not show any symptoms, while 50% of people with a penis will have symptoms. Generally, the symptoms are similar to gonorrhea – pain while urinating or an unusual discharge.

Chlamydia is one of the most common sexually transmitted infections, transmitted via vaginal, anal, or oral sex, and can affect the throat, anus and even the eyes. In cases where it makes it to your eyes, it can sometimes cause serious problems.

There is a good treatment for chlamydia, and most sexual health clinics can give you a simple urine test and the medicine needed.