One thing I have done is use a crisis hotline which is anonymous and specializes in these feelings. I used to volunteer at one and so I know they are well-trained and are used to all kinds of things so they are often quite helpful. I don't necessarily tell my therapist that I have done so. It is just a buffer so I can express it without raising personal concerns that would lead to something else. Sometimes these feelings come up and talking to people who really are used to them can be helpful.