I recently had complications in my private area so went to get tests at the doctors. I had a full screening for STIs to be safe. I have been with the same partner for 7 years. I had a letter confirming I had chlamydia. I confronted him and he told me he had slept with two other women unprotected 3 years ago. Is it possible that this has been in my system for that long or is it more likely it's happened recently?