Please please someone help me?

I keep getting violent images in my head about hurting others. I have anxiety/ocd. I cant get rid of them. I have drunk heaps of alcohol but that hasnt helped. I have spoken to my therapist about them and been given antidepressants but thats hasnt helped. What can i do. i cant relax with these images, please help because i am close to commiting suicide. I have tried listening to music, exercise, relaxation techniques but nothing helps. what else can i do. i am crying right now, i am desperate for help.