Thank you really much for your replies. I'm 15 now instead of 14, but I don't know if that really makes any difference. Yesterday I told my mum about my OCD issues. She's really supportive and understanding... she's such a great person. I cried a lot yesterday. We are going to find an OCD therapist... if I think I can really trust her (or him, but for some reason I would prefer a female therapist), I will maybe show her this post. Maybe.
Thanks again, you really help me a lot.