I keep getting cavities?

I think it's really awsome that you have only had two cavities and you're a teenager. Do you have a spin brush or an electric toothbrush? If not, get one. The spin brush is under $10 and does such a great job of cleaning your teeth. I noticed a big improvement when I started using it. Other than that, watch sugary treats and soda. Drink more water. I hope you're drinking milk and eating yogurt which are rich in calcium and help keep your teeth strong. Good Luck Sweetie.