I FEEL VERY SUICIDAL?

I have been felling suicidal for the past week due to a person haring me, I feel like I just want to end my life and not be here no more. I have plans on ways to kill myself and I just don't which one I want to do yet. Some of the plans I have are taking a crap load of medication, or walking on the freeway. I need some HELP PLEASE!!!