My gf has been diagnosed with Trich though I've been monogamous and she claims to have been also. We've been together for 10 months. We had unprotected sex our very first time and once about 2 nights before her exam (PAP). Prior to Her and I, I haven't had sex in a year and a half. I was told by MY doctor that the infection would have most likely killed itself it that period of time even if untreated. She heavily believes that I cheated on her and I haven't (HONESTLY), and others believe that she didn't. Where did this Trich come from? How did we get this if both of us have been monogamous? Could she have been misdiagnosed. Please help, our relationship is being ruined behind this!