Sacramento Breast Implants doctors

Fat is not incorporated into any breast implant - they are made of silicone or saline. Fat may be injected into the breast. This is a separate type of procedure and is still somewhat controversial.

In general most of us are asymmetric.  Its true, if one looks closely enough differences can be noted.  Breast are usually asymmetric, whether it be the bottom of the breast, the breast fold, nipple position, areolar size, breast tissue, width, skin or even differences in the rib positioning, sternal or clavicular shapes - difference exist in most people.
Through a careful examination and discussion with your plastic surgeon these difference may be addressed with different implant sizes, shapes or styles.  In some cases a breast lift or liposuction may also help minimize the differences.  However even with all the tools available the breasts remain asymmetric if examined thoroughly. Realizing that despite all of the adjustments some asymmetry will exist no matter what is done.  It may be slightly less or different - but through time the breasts will age, relax, and stretch differently.  My suggestion is to have this discussion with your plastic surgeon.
We often recommend going with similar size implants so that gravity will play a similar role over time.

It is difficult to make a determination without pre-op photos, but your post-op result is very good. The "final" result is not complete for about 6 months, so you may change more.