I am 12, and I'm 5'2 right now. My weight is currently 113.3, and that is in the healthy weight range. If you are worried about your weight, think about this: To be at risk of overweight if you're 12 and are 5'2, you have to be 130 pounds. That means that if you are under 130 pounds, you're in good condition. Once you get really close or past 130 pounds, you should figure out a plan to help you lose some weight. A good and healthy weight range for you would be about 100 pounds- 120 pounds. If you can stay in this boundary, your weight is fine, and you shouldn't worry too much about your weight. Hope this helped!