so I been dating this guy for 9 months now I get tested every three months just for my own personal safety I was in a relationship prior and it’s taught me to not trust people due to constant cheating but since being with my new boyfriend I have been tested December March June and recently in September I have came back negative for all my visits until my last one I was told I have chlamydia I have not been with anyone but him when I told him about it it took some time but he’s confessed to sleeping with someone back in the beginning of us dating he says around January February he said he got tested due to him having minor symptoms that went away a few weeks later when he was tested he said it was negative he took no meds and never did a follow up I had minor discharge and horrible back side pains and a weird feeling when urinating I thought it was a uti this was in July I’m jus now finding out in sept I have it my question is is it possible I had it since Jan and never showed signs til July is it also possible I’ve had it and it didn’t show in my std testing til September or did he have to recently cheat for it to show now in my September screenings my doctors are telling me I had to have got it between jun and sept due to my daily screenings