I've been binding for about 3-4 weeks, and in the last 2 or more I've started to notice that where my chest is spread downward and flattened (againt each breast and underneath) that there is a big red mark. When I first noticed it, it was just a red mark, same texture as the rest of my skin and everything. But I just took a look at it closer today and it feels rougher in places, and some of the skin is peeling a bit. It doesn't bother me, or hurt in any way, but I just wanted to know if this was normal?