What do I do?

Hi everyone, I will be talking to a therapist. Before, I hadn't shared the darkest details surrounding my OCD. I feared if I told the therapist, I will suffer consequences. They are things I am not very proud of. Yet, I continue to suffer because I couldn't come to terms with it. Is it time I opened up completely? Is it a safe place to crack myself open? Do the things we share really remain confidential? Please tell me everyone.