I am hoping that mine will not change a whole lot, I had an augmentation 18 years ago when I was 22 and I weighed about 150, at the time I think it made me a full 38C (I was a 38 when I weighed 135 before kids so I guess my rib cage is large). Right now at 256 I am a 40DD. I know my implants won't make me go below a C just hope they don't start sagging or anything.
I am really hoping to not take much time off, I have a desk job and I am the type that went back to work 5 days after childbirth (baby came to work too), 5 days after a hysterectomy, an the day after my knee scopes.