If you have had a breast implant the gel or the silicone could have moved and can cause problems in the future!!
Try working out by doing crunches and push ups (not pushup bras) this will make the rest of your body small and leave your breasts growing [or looking] HUGE!
I think you should just go to google because that is what I am doing because I also have very small breast and everyone I know has them.
Unless you get them done there is no possible way for that to happen..no cream or pill will work.