Sore after wearing underwire bra 5.5 weeks post breast augmentation. Should I be concerned? Thanks in advance!

Underwire bras can be a problem early in the recovery. I would definitely discuss this with your plastic surgeon. I would refrain from using it any further. Sports bras are good in the interim until you have completely healed and can wear a commercial bra. Good luck

It sounds unlikely that you would have done any serious damage by wearing a bra that was undersized. My recommendation would be to call or email the practice and let them document the event in your chart so that your patient history is thorough in the event that something does occur down the line.