⚠️tw⚠️ PLEASE HELP

I dont know how to tell my parents i need to be in a psych ward right now. I have been really struggling and every day i get closer to breaking. The urge to cuts every inch of my body everyday is unbearable but if they see my cuts they will blame me for many things like the last time. I suggested to my mother a few months ago that i should go to a psych ward but she said it was just 'passing on the problem'. Also i live in Australia if that helps :/