Can one breast be more sore and swollen than the other 8 days post op after BA?

All breasts are different right to left before and after any surgery. They also heal and feel differently over weeks to months.Keep close follow up with your plastic surgeon during this time for instructions.

It is not uncommon to more pain/swelling to one breast vs the other at this point.  If pain continues or does not improve, please follow up with your plastic surgeon for further evaluation.  Best of luck!

The breasts early after breast augmentation can feel and look different due to differences in muscle spasm, size of breast implants, differences in width of chest wall, etc.  In the absence of hematoma, seroma, etc.  this can be normal.Follow up with your PS if pain continues.
Kenneth Hughes, MD, ABPS Board Certified Plastic Surgeon
Los Angeles, CA

One side always hurts more than the other so I wouldn’t worry too much about that however if you think you did something wrong and may have injured yourself then I’d suggest booking an appointment with your surgeon to be examined. 

In view of the fact you were reviewed at 1 week with no obvious concerns, it would be very unlucky to then have a problem subsequent to this. However, I am sure there is 24 hour cover at the hospital so it might be wise just to pop along for your reassurance and check all is OKGood luck!