Will I stay the same cup size after my swelling goes down?

Congratulations on having undergone the breast augmentation procedure.  Your plastic surgeon will always be your best resource when it comes to accurate assessment and advice.Similar to what you have experienced, I also ask my patients not to communicate their goals ( and/or evaluate the outcome of breast augmentation surgery) based on achieving a specific cup size. As you know, "cup size communication" can potentially lead to misunderstanding and/or disappointment…Generally speaking, breast implants will "drop" into the pocket that was created during surgery. The rate of breast implant "settling" may depend on factors such as size of breast implant pocket dissected, tightness of the overlying skin/muscle layers, and size of breast implant utilized. Normally, it takes about 3-6 months (for some patients longer) to see the final result. 
Many of my patients report that as the swelling around the breast implants (for example, in the sternal area) decreases, they feel that their breasts appear more projecting (and that they have better "cleavage"). Also, in my opinion, the "drop and fluff” phenomenon does hold some validity; as breast implants “settle”, many patients feel that their breasts actually look larger. Similarly, it takes a few months for the breasts to "soften" in most cases.  Most of my patients tell me that their breast implants feel "part of them" somewhere between 3 to 6 months after surgery was performed.  There is definitely a physiologic and "psychological" (body image)  adaptation process that occurs, at differing rates for every patient, for patients who undergo any type of aesthetic surgery, including breast  augmentation surgery.  Understandably, patients often experience significant emotional "ups and downs" around the time of surgery.
 Best wishes for an outcome that you will be very pleased with.

Hard to predict what cup size you will be since there is no direct correlation between cc's and cup size. Trust that your operating surgeon filled your breast pocket optimally to give you the best possible result. As the swelling subsides and the implants drop and settle some, your implants will assume a more natural shape which most patients desire. Good luck!

Thanks for this question.Your breasts will change and your breast cup may change too, but this is not predictable. Not all patients get smaller as they drop and fluff. Many will stretch out to a bigger breast cup. You should use your plastic surgeon as a resource on this subject and see what he/she predicts will happen. Good luck, Dr. ALDO :)