Since you are a teenager, your nutritional needs are much different than us, older, folks. So ask your pediatrician about a weight loss plan because Atkins wasn't written for children or teens. There was a separate low carb diet Dr. Atkins used for children and teens, that ensured they would get the nutrition they needed .
You're in 8th grade which means you are about 14 years old. Right now, is a critical time in your growth and development. You're going through your growth spurt and your body is becoming "adult". Don't mess things up by denying your body the proper nutrients.
So please talk to your parents and your doctor about losing weight in a way that won't mess you up in the future. Your nutritional needs are very different than the adults on this board.