I remember those days nothing ever changes and your hoping someone will notice and take you out of that element but no one hears that silent scream. I would say that this will go on as long as you want for it to go on. Soon that silent scream will turn into a loud one. You should talk to someone you can really trust when you have that along time to think about harming yourself. I use to write it all down in my journal... what was going on in my mind, how i wanted to cut up myself my suicide plan trust me it helps.
PM me if you wanna talk.