Hi
I'm 22 and I dont have much breasts to speak of either! My sister on the other hand is the complete opposite!

I would think carefully about the boob job thing, it can be painful and go wrong, expensive too, I would imagine, but its up to you though.

I used to hate my small breasts but I've grown to like them I think, I wear padded bras and pretty underwear to my full advantage-it makes me feel more confident about my size.