Please i really need clear skin?

i used a lot of product that made my face worst.I used proactiv the stupid product and my face feel ruff and i got a big pimple then i use netrogena, the acne wash, then my face turned all old looking then i went back to using proactiv then it turn even even worst.I dont know how to get clear skin and i signed 4 a dermatologist and i could go to him next 5 weeks and i need clear skin 4 my sisters wedding and its in 1 week. Please im begging what do i have to do everyone keeps on making fun of my face and im not lying im only 13 years old with a acne face pppppppplllllllleeeeeeeaaaaaaasssssseeee… help