So I thought I had a yeast infection, but found out I had Trichomoniasis. I have been faithful, he says he has been as well. I'm so torn right now because it is not likely this was contracted in any other way than having sex with someone else. Has anyone dealt with this? I have read that men can carry without knowing, but it would still be passed on reguardless. I'm pregnant with our second child and STD screening in September was normal.