I had my breast augmentation 4 months ago, and my surgeon recommended I start using mepiform silicone sheets for my incision site. I have been using it for almost 1 month now, usually just leaving it on at all times until I need to reapply. I took it off earlier to see a black dot, and I am now worried. Can you tell me if I should be concerned, and what I should do. I have used some peroxide on it. It doesn't seem to hurt nor is it oozing.