First of all, the right size bra or a good fitting bra will make you feel better about your body and your shape.
I know a lot of people like minimizers, but they tend to push the boobs back and to the side, making you like wider/ and stockier. Really... you might not be wearing the right bra size. (When I see people say they are a DD or DDD, it's usually that they are smushing themselves into those sizes as they can't find larger sizes in regular stores).
So, do a fitting (not at Victoria Secret as they don't have larger cup sizes, so they will just give large band sizes). Runningfromfat who used to be a regular here had great info on bra sizes. Let me give you a link: http://www.bralessinbrasil.com/p/fin...-that-fit.html
Now... you still need to be comfortable, but the band around your chest should be snug and that should be what is supporting the bulk of the breast weight, not your shoulders. Experiment and try different things and you might find that having larger ta-tas isn't such a huge deal.
Now, about shrinking...
At 114 at 5'6", that is super, duper thin. Do you have a really small bone structure? My guess is that your boobs will shrink some if they did in the past, but by how much, no one knows.