You thought that this person would be able to help you seeing what his job is. He felt threatened by you. Im sorry this was not the turn out you hoped for.
Yes there are a few things in my past that made me go "oh god, I cant believe I did that". The bad part is that we play it over and over in our minds and we make ourselves crazy. Its like punishing ourselves over and over again. Why do we do that? Ugh.
Come to us next time. We got your back.