If you are exposed to chlamydia, you may not notice symptoms right away. The CDC notes that it may take 1-3 weeks after being exposed to chlamydia for symptoms to appear. Some people may not develop symptoms until months later, or not at all. For some people, symptoms may go away on their own, but that doesn’t mean the infection is gone. Always take your full course of antibiotics and get tested again to make sure the bacteria is no longer present.