Chlamydia is usually curable with the correct treatment. Most persons who get repeat infections get them from untreated partners so its really important to make sure your partners are treated. Occasionally, the treatment for chlamydia is unsuccessful. If you test positive for chlamydia more than 21 days after you've been treated, and have not had sexual contact with anyone since treatment, talk to your provider about trying a different antibiotic treatment. Here's a great resource on how to talk to your partner about STIs: https://www.plannedparenthood.org/learn/stds-hiv-safer-sex/get-tested/how-do-i-talk-my-partner-about-std-testing