Is my height and weight healthy?

hi, I'm 13 years old, and I'm 5 feet 7 inches. I weigh 125 pounds... Is this overweight? A lot of people tell me I am skinny, but I just don't think so. When I wear a bathing suit I feel so... Large. I have belly fat, and huge love handles. They hang over my swim shorts!!! i just want to know what my weight should be for my height and age. And my breast size is a 34 B. is this small??? I haven't started my period yet. Will I gain weight after I get it? Is it bad that I'm 13 and don't have my period yet? Sorry for all my questions, but I appreciate the answers!