I know what you want to hear, but it is very unlikely that your husband has been carrying this around forever. You need to have a good, long talk with him. Chlamydia can lead to pelvic inflammatory disease (PID), which can leave you infertile. Do a chlamydia search on the web...research it. All the research I have done indicates that while it may go undetected for a while, it won't stay undetected forever...certainly not 13 years. Good luck to you.