As far as I know I did not have any .S.T.D's that caused my .P.I.D--i had been tested--but my x-husband was always sleeping around. In fact they never gave me a reason for it.
To the original poster---the std you have--could be in a different stage of the disease--like previous poster says you could have had it longer than the 2 years and it was laying dormant. And visa versa--- clymidia--is one of the most undiagnosed .Std. For it most often shows no signs-- in the male and in the female only cervical changes occur---but this is after time. Not right away. But all it takes is getting tested for all .S.T.D's periodically--and specifically ask for the clymidia test. Cuz sometimes they do not just do it---unless they have a reason too. Well...Thats how it has been for me--when I get tested.
And are you sure she was actually tested---and if they actually did the clymidia test--like I say you have to ask for it---or tell them you might have been exposed to clymidia specifically. Otherwise they do not just do it.