I am 9 days post op BA and returned to work. I have to open doors often. Is this bad for me?

as long as you are careful and not doing anything to strenuous you should be fine with some normal everyday activities like opening doors, etc at POD 9.  Hang in there.

Listen to your body when it comes to performing activities after a sub-muscular breast augmentation.  Be careful and if you are involved in strenuous activities which cause discomfort slow down.  Normal daily activities should not be disruptive to most patients.  If you have concerns share them with your plastic surgeon during your next follow up visit.