Can you have chlamydia without knowing?

Yes, it is possible to have chlamydia without knowing. In fact, about half of the people with chlamydia don't have any symptoms at all. This is why it is important to get tested if you think you have been exposed to chlamydia, even if you feel fine. Chlamydia can be easily treated with antibiotics but, if left untreated, it can lead to serious problems, including pelvic inflammatory disease and infertility.