I can't stop this habit!?

I am overly obssesed with how my skin looks, it's literally on my mind 24/7 and I constantly check the mirror 10 times an hour or more. It's really effecting me and I really would like to chill and don't worry at all. I have lots of red marks and whiteheads on cheeks. I used to be clear and don't care and my skin was crystal clear then I started to care more and was obsessed about it. Now I can't get it off my mind and the more I think about my skin, I don't think it will get any better. Please tell me what to do, tricks? I wish I could have some kind of memory lost. I do keep myself busy, exercise, cook, tv, music, and school. I can't stop ! Do you think it's OCD? What should I do? I can't afford a shrink!