Im really embarrassed about my boobs!?

Hey,i know yahoo answers isnt the best place to be discussing my personal problems but i really need some advice, i have strecth marks on my boobs really badly, and im a size 30 double dd, and im really slim with these great big boobs, that i bet people would love to have, but not when thier got massive strecth marks on, i have to buy tops that cover, them, and people asume i shove things down there because you never get to see them, and they just look too big but that really isnt the case, its the fact im so self concious, and embarrassed. Like i went swimming trying not to think they were there with a bikini on, it was sucha night mare trying to find something that covered my boobs, but nothing i could find, like even a swimming costume that fit round my waste and my boobs, and these bunch of lads were like err what the hell is on her boobs, and start calling me skanks. and than all these girls were laughing, i suppose boys dont really know the effect it has on us girls sometimes, like these strecth marks wernt caused because im skank (which im defiently not) its just something that strecths and people dont relise that, and my back hurts so bad, aswell with carrying these boobs and, strecth marks are there forever, they may fade, i use bio oil and coco butter, for nearlly 2 years now thier still bright and not faded atall. I just cant bare this feeling anymore, and i cant find a decent lad that will love me for who i am, not what my boobs and that look like! i hate my boobs, they effect my life so much! it really hurts my feelings, because people say dont worry about it, its not like everyones looking at them in the pool, but yet thier so big thier really not hard to miss! and i want to enjoy my life, swimming like i did when i was a child, and wear strap tops instead of a jumper all the time. What can i do? someone please leave me a little advice...