You can't "carry it and not get it." It's not a virus, it does not lie dormant like herpes.
Chlamydia is a bacteria. Bacteria is either dead or alive. If you have the bacteria you have chlamydia.
You can have it and not have symptoms though.
It is unlikely that after several chlamydia tests and being in a monogamous relationship that you'd contract it however.
Hope it helps.