there is something wrong with me, im to scared to tell *TW*

I'm I'm a teen and I'm a male. I was intensely screamed at as a child by my dad and I remember being scared to death to even get out of my bed at night and drink water when I was under extremem thirst. I feel as though I was also molested as a child by someone else. My dad has stopped yelling at me mostly and I'm still nervous around him. Due to this I have developed bowel issues. I started having fantasy and drawing pictures of Women/girls being imprisoned and me being in control of them. When I turned 10 years old I discovered Porn and found some extreme pornography and fake rape videos. Around this age I also started molesting my sister (While she was sleeping) to give myself pleasure . as time went on I became a daily viewer of Child porn/Blackmail porn and even rape videos and get aroused by them and crave going out and raping someone. I molested my sister while she slept even more. To make matters even worse I started harassing older teenage girls into doing disgusting things and humiliating them on Facebook. I know its wrong but I just can't stop!! What is wrong with me? If i tell my guidance counselor at school or an adult what will happen to me? Can I be cured? Am I a horrible person?

PS. I have ADD and SOME anger issues to.
Thank you and please be specific as I'm really nervous to tell anyone what I've done.

I noticed that you didn't mention in your post that you actually feel remorseful about your 'transgressions' just concern about the consequences, so I'm curious to know how you actually feel about it. I do things that I know people would consider 'wrong' but I don't feel like it's wrong, is that the case for you?