Hi, I have been treating my toenail for a fungal infection, it seems to be clearing up but now I’ve noticed two lines on it. Not sure if it’s been there a while and is part of the infection or it’s something else. They are two small black vertical lines, they look like they could meet to make the one big line. That’s what I’m terrified of, not even sure if that’s a thing but keep looking at and reading about nail cancer. Has this happened to anyone?