I am 13, i weigh 138 pounds, am 5'4 am i too overweight for my age, all of my friends are like 90 or 100 pounds. I do sports and am very active so i dont know why i weigh this much. I also dont eat much. Do you think i should worry about my weight?

If you are more active than your friends, then it makes sense that you would weigh more.
Muscle is denser than fat, and therefore heavier by comparison.

Just doing a quick google search on weight ranges

You look good!

Devo is right, you need to learn this now not later. Muscle weighs more than fat, and muscle helps to burn fat. So you need lean muscle in order to burn fat. You may not look like a "barbie doll" you are built like a human being. If you stay active and keep up with the exercise and sports, when you are older, you will look the way all your friend want to look. Don't pick yourself apart to look like a 12 year old little boy. Love yourself for who you are, because later in life that is what a young man will want to marry, some one who is themselves; not someone who tries to be something they are not.