I honestly think I'm bigger than average?

How do I know if I'm overweight? I'm 135 pounds and 5'4"

I work out and I don't eat that bad but I have really bad self esteem. I've cried over my weight and I feel fat in everything I wear. How do I know if it's just me seeing myself this way or if other people see me this way too?
I honestly think I'm bigger than average?
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