If you really were overweight as a kid I know it can be quite hard to lose that image of yourself, but I can tell you if that's you in your pictures you're very very far from being overweight now.
I used to be the overweight kid too I'm older now 37. I've learned not to judge myself as others might judge me if your basically a good person don't ever call yourself a loser. Some of the most beautiful and successful people in this world have lost or been a so called loser at some point. Love yourself and the world we love u too
Your profile is on private, so I can't look at your photos, but from what I can see, based on your current profile photo, you have the body of a model. Don't doubt yourself. If anything your looks make others doubt themselves lol.