I need some help people, please. I`m 13?!

I need some help people, please. I`m 13?

About a year and a half ago I started feeling like I was being watched whenever I was in my room, it was pretty easy to ignore but soon escalated and I started doing things like sitting in the bathroom, without actually going mind you, whenever I felt like I was being watched (apparently whoever is watching me has manners). Then I started freaking out whenever something was on an odd number. Volume, television channel, radio, et cetera. If anything is uneven i`m 100% sure something bad is going to happen. Since a year and a half ago things have gotten much worse. I can feel someone watching me wherever I go, i`m washing my hands all the time because I feel dirty. I can`t eat in front of other people, theres a lot more but it won`t fit in this. Is there ANYTHING I can do?
I should also mention: I have Cystic Fibrosis and the beginning of liver disease, so I don`t want to take more meds. And when I was very young I was raped, but I still havn`t told my parents. (continuing below)

2 weeks ago
I don`t really have a strong connection with my real mother, I have four guardians (Mother, Step Mother, Father, and a Step Father), mainly because in short, she`s a ****. When I was younger I used to find naked pictures of hers, dildoes, all kinds of things. I want to love her, but I can`t no matter how hard I try. She has OCD, and is also pretty crazy.
I can`t get excited. Whenever something happens that makes me really happy, all I can muster is a "Awesome" or "Cool" I can`t for the life of me freak out and get excited when I get cool things, or something of the like.

I also get mad very, very easily. If I read something and it has bad grammar, or it says something that I deem stupid, I get mad and punch walls and other things.
I also have a very hard time connecting with people my age, and actually resent most people under 20-30.
There is so much more,(and i`m sure raging hormones don`t help) but I don`t want to go on forever.

Get help.