Small, hard knot/lump 6 days post op breast augmentation. Is this normal? (photo)

Thank you for sharing your question and photograph.  It is unclear without an in-person examination what may be causing the hard knot/lump.  It may be a bruise with associated tissue swelling or a cyst.  Best to have your surgeon evaluate you tomorrow as they can give you the best advice. 

Thanks for your inquiry,  honestly you will probably get your best answer at your appointment.  It could be a number of very things from a bruise to a breast cyst-an exam will help,  good luck and happy to hear you are pleased with the results so far.