At two weeks postop we usually expect surgical wounds to be well on the way to healing. One of the problems with incisions in the axillae, or armpits, is that they stay moist and can get "soupy," because the skin is constantly together trapping moisture. Sometimes it helps to simply place a small pad of dry gauze folded up against the incision just to keep the skin surfaces from contacting each other and to allow some air to circulate. Sometimes we see redness like this just because the tissues are inflamed and irritated, but it's always better to err on the side of being conservative and aggressive and assume that there may be some infection there too, given all of the moisture allowing skin bacteria to grow. For this reason it will be best if you contact your own surgeon tomorrow and tell them what you see. They will likely want to see you in the office for a personal evaluation and probably prescribe a short course of antibiotics. You don't want to take any chances on getting brand new breast implants infected, so sooner rather than later to see your surgeon would be best. Good luck.