Weight Loss For Teens Support Group
This community focuses on weight loss issues for teenagers, and covers topics including strategies for weight loss and a discussion about what the appropriate weight expectations for teenagers should be. Weight loss, in the context of medicine or health or physical fitness, is a reduction of the total body weight, due to a mean loss of fluid, body fat or adipose tissue...

But I guess we should think about the present and not the future. We all know you can do it!!
Good Luck and God Bless!!! :D
BTW: Congratz on losing 50 pounds! That's awesome! As for the Stretch marks, maybe you could try Bio Oil. I've heard it works really well.
oh and try rubbing the areas that have stretch marks. increasing blood flow will help the mark appear less prominent.