5 years post-op breast augmentation - red mark on nipple and it's sore to the touch - advice?

Hi. You have done the right thing by making an appointment to see your doctor. Anytime you experience a change in the way things look or feel in your breasts, you should go for an evaluation with your doctor. If necessary, after the exam, he/she can direct you to get the proper testing.

Without more details, it is difficult to provide any specific guidance. You are doing all the right things by seeing your doctor for a full assessment and examination. With all the publicity about textured implants and cancer, I can see why you are concerned. To (maybe) put your mind at ease a little bit, the cancer associated with implants is very rare and tends to create changes to the whole breast, such as breast enlargement, hardening, and pain although there may be more subtle signs like skin rashes. Once again, the first step is to see your doctor, and they would order any further tests or imaging.