Well, go get it checked out. I just had 3 "suspicious" spots biopsied on my back. None of them turned out to be cancer. I did get diagnosed with some yeast infection, though, that I'll be treating over, at least, the next 5 months. It's a real pita since I have to use a spatula to apply the cream 2X a day, and another lotion once a day, which has to be rinsed off in a shower after 15 minutes each time. The only reason I even went to the dermatologist is bc my pcp saw the spots on my back and, basically, insisted, that I get them checked out. She's treating me for an auto-immune hypothyroid condition, so I didn't want to "rock the boat" too much by refusing to have the spots looked at. I wasn't functioning very well with my untreated hypo, and I was a little concerned that I wouldn't be able to finish up the stuff I need to before I ctb, so that's why I sought treatment again for my hypo. If it were just the spots, I would never have even bothered getting them checked out. But, the hypo was making me sleep all the time and I wasn't getting enough things done.
I'd go get your spot checked out. It's not worth the potential of losing an eye. You never know how much longer you'll be around.