Domestic violence and I was the one who called the police.?

Ok so I called the cops on a domestic disturbance and now I am being asked to go to court and be a witness to this situation. Will the judge tell everyone that I made the phone call? or will it still be confidential? I don't want anyone to know I made the phone call cause I don't want certain people to hate me. Is it likely that the judge might bring it up and ask why did I feel I needed to make that call? please help me. I don't want them to know I did it cause this call made someone close to me go to jail for two days and I don't want them to be mad at me. Please help I really need the answer