800cc implants too small

It is very difficult to determine the exact size and shape implant you will require to best match your ideal breast image without an examination by a board certified plastic surgeon. Not just any board certified plastic surgeon, but one with many years of frequently performing breast augmentation surgery including different approaches, techniques and implant choices. This is because several measurements not to mention your breast characteristics are needed to determine the optimal implant size to obtain your goals. Without knowing these dimensions it would be difficult to make this determination. For example, the existing base width of your breast will determine, in many cases, the maximal volume per implant profile that you can accommodate. To illustrate; a 100 cc difference may make a significant difference with a narrow base width breast, but much less of a difference if you have a wide chest wall and wide breast “foot print”. Therefore, just because your friend may have a great result with let’s say a 350 cc implant to make her go from a “A” cup to a “C” cup size does not mean that you will have the same result with the same size implant. . Further simply placing implants in a bra to determine the size best for you is not always accurate as the bra often distorts the size, is dependent on the pressure the bra places plus the implant is outside your breast and not under it among other variables. Computer software morphing programs that automatically determine the best implant size can be helpful in some but not all cases (e.g. doesn’t work well in my experience with existing implants, sagging or asymmetric breasts). Using “want to be” photos however are useful if simply provided to the surgeon as I will further explain in the below link

You are only 6 weeks out so best to wait to allow the implants to fully settle and to let all the swelling resolve. I advise my patients this can take a good 3-4 months and with larger implants, can take a full 6 months or even longer. Best to wait a bit and if you still aren't happy with your look, have a frank discussion with your surgeon about a possible revision. Good luck!

I am sorry about your disappointment after breast augmentation surgery. At this point,  your best bet is patience and close communication with your plastic surgeon. Although good advice would require in-person evaluation, it sounds like you may benefit from more volume (overfilled saline filled breast implants).  You may find the attached (dedicated to larger breast augmentation surgery concerns) helpful to you as you learn more. Best wishes.