How old are you? You know many people don't have boyfirends until mid rwenties! So don't worry about that. I agree with the first poster, there's a lot you can do to make yourself feel better about yourself without resorting to surgery. A girl can go a long way with a good haircut, for example, as the user below me said. Have you ever seen My Big Fat Greek Wedding? Check it out, that chick pretty much transforms herself in a fw days :)
and if people make comments about your looks, they are not worth it. Just sile back at them and wave, it will confuse the, ;-)