Im so self conscious...

I hate my body. I am 14 and I feel so ugly with this stomach. Every single girl I see at my age is tiny and beautiful and I will never be like that. I always see these weight loss transformations and they make me feel worse. I have tried EVERYTHING and nothing has changed since 5th grade. All I want is a flat stomach, and it seems as if they are required because everyone seems to worship girls who have that. I went to my city pool the other day and all of the girls had flat stomachs and I felt like a disgusting pig. I weigh 130lbs and I do alot of sports and I am not lazy. All of the girls in my family are tiny and beautiful and I am sick of myself. I am just afraid of being called fat and being made fun of like I used to be. I feel so ugly and I just want to become flat and beautiful. I don’t know what I am gonna do anymore. What if I wear a swimsuit or a crop-top and I get judged by everyone? All I want is to be beautiful and I have tried so hard but I haven’t made any progress. Please help me...