Hi nat,i have answered you before, i dont know anything about plastic surgery but i really think that you are worrying far too much about physical appearance.
surely if you look around you will see people are all different shapes and sizes, the main thing is to be happy with the way you are.
I got loads of grief in school, for my colour, my size, my hair - whatever people felt they could single out, but i have never had problems finding partners !.
everyone has taste and preferences
all you need to do is keep fit and make an effort to look nice and be nice you'll be fine.
Take care and take it easy !