It’s totally normal. Everyone actually has one breast bigger than the other, much like your feet they’re sisters not twins! Mots of us don’t notice when they’re small but it does become more noticeable once they are enlarged, you do get used to it really quickly though! Also, each breast should be treated as a seperate surgery so they heal/swell at different rates, you likely have more swelling in one than the other and the difference will lessen over time. Hope this helps.