I am sorry to hear of your situation. I do not trust fat grafting because the results are very unpredictable. It is hard to say what should be done in your case because i do not see any photos, and an in person exam is best. However usually pocket tightening (capsulorraphy) and maybe removal of some skin in the inframammary fold region is often an option. I would recommend you seek in person consultations with board certified plastic surgeons in your area for more detailed information.
If you have enough of your own breast tissue to get you the desired bra cup size then I would recommend an explanation with a lift. It appears to be that no implant would be needed but it is difficult to say without an in person exam. Best of luck to you.
Well wishes for your upcoming surgery. In general the downtime for breast augmentation is two weeks of no heavy lifting, no overhead reaching and no strenuous exercise. As a cashier if you can modify your arm movements to avoid above then you could go back to work after just a few days. Best of luck to you.
I think it is smart to wear two sports bras or at least one really good high impact sports bra after breast augmentation if you are going to run. An underwire sports bra is ideal to help support the pocket and inframammary fold. So I would support the recommendations given to you.
Thank you for your question and photo. Yes switching the implant style and profile will help but you also need pocket reconstruction and release of scar tissue on both breasts to achieve a better aesthetic result. Make sure you are going to a board certified plastic surgeon who performs a lot of revision breast surgeries for this procedure. Best of luck to you.