Hello, I recently noticed this black spot under my stomach. So far it looks to be under the skin, I cant tell if its a mole or what. Im going to a dermatologist in two weeks but I'm anxious so I wanted to get some opinions beforehand. I'm worried about things like melanoma, but it could be a benign black or blue nevus or something else. Here is a link to the picture: https://postimg.cc/WFt6m3Zz