I had a brown spot lasered off my cheek about a decade before my pregnancy. Imagine my surprise when it returned! It slowly darkened during the pregnancy, along with a new one near the corner of my eye. After delivery, they both lightened a bit, but I wasn't happy with them at all. I had them both lasered off several years ago (daughter was about 2). I'm now pregnant and dreading their return. I will definitely have them removed again if need be.
Updated
I had a brown spot lasered off my cheek about a decade before my pregnancy. Imagine my surprise when it returned! It slowly darkened during the pregnancy, along with a new one near the corner of my eye. After delivery, they both lightened a bit, but I wasn't happy with them at all. I had them both lasered off several years ago (daughter was about 2). I'm now pregnant and dreading their return. I will definitely have them removed again if need be.