Am I too fat? I'm afraid to use diet pills?

I am 14 and nine months, technically 15, and weigh around 115lbs. I feel like my thighs are beyond huge and when I flex I have abs but if I don't I look Awful in my opinion. Seeing myself from a side I feel like Mars.. do I need to lost weight?
Am I too fat? I'm afraid to use diet pills?
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