What's wrong with my skin?

I'm fourteen, almost fifteen, and I have a bad acne problem. I get super, super upset and jealous by all of my friends with picture perfect, flawless skin (even with no makeup). It seems like barely anyone in my grade has any skin problems, expect for maybe a pimple or two, and I always feel really self conscious because my skin is terrible compared with others. I've consulted dermatologists, and I have been using a topical treatment, as well as cleansing my face twice a day, and moisurizing. The topical treatment has helped a little bit, but my acne is most definitely not gone. They suggested another perscription, but it was $200 which is something I can not afford! Bottom line, is my skin normal?? I'm so self conscious about it because no one I know has skin like mine. :/