I’m 15 and I’m kind of chubby/thick. Over the summer I gained a lot of weight. I have no idea why (growth?) I gained about 20-30 pounds. So now I have a bunch of new stretch marks ):

I also got taller. I hope that the growing is done because I am just starting to like my body. I try to work out when I can and I play 2 sports (Basketball and Tennis). Will I grow anymore? How can prevent myself from getting any bigger?