Is my left breast implant incision infected? (photos)

From the pictures, it appears that your incision has some superficial breakdown, but does not appear infected. Without a physical exam it is impossible to tell for sure. Any thick, white drainage, fever, chills, redness, and tenderness would suggest an infection. I would communicate your concerns with your plastic surgeon. 

Based on the photo, your incision does not seem to be infected. However, it would still be best to schedule an appointment with your surgeon as soon as possible to rule out infection. Common signs and symptoms of infection are redness, swelling, tenderness, fluid secretion and fever. Make sure to keep the area clean and dry all the time.