STD - Trichamonsis & BV

Hello everyone, i wanted a opinion from some other people. My ex fiance and i were together for 2 years. I get bv alot and i went to get tested for stds just in case. Turns out i have trichamonsis. He says he hasnt cheated or anything. And since the pandemic we both lost our jobs and we are in the house with eachother 24/7. Unless he goes to get food and to the ATM. But he is normally back within 20 minutes. He got on his knees and begged and cried that he hasnt cheated. Atp im going crazy trying to believe him and im doubting the damn test. But its like proof right in front of my face. I googled the symptoms of trich and i didnt have the discharge they were saying. It was more like a bv discharge. The last time i was tested for stds were in the beginning of 2020 and i didnt have anything then. I am going to get retested but did anyone have trich but it ended up being misdiagnosed?