boyfriend

I'm still in high school and this year is my last year, I'm thinking about going to prom and I want my bf to go with me. He lives 2 hours away from me and I already asked him if he want to go. He said he would think about it. The thing is that I don't feel that comfortable with my body. Even though I don't weight that much I don't feel good about it. What should I do? I really want to go with him.