I recently tested positive for chlamydia. I have had sex with two people since I have been sexually active, my ex, and the guy who i am with now. I waited a year between the guy I am with now and my ex to have sex. In between those times and while me and the guy I am with now I had been tested and they were always negative. For example, me and the guy I am with now have been having sex since January, and my test was negative for every thing in Feburary, but the one I had recently was positive. Is it possible for me to have had the STD since having sex with my ex two years before and the STD to be in remission and the test in Feburary to still have come up negative?