I'm not yet 30 and I had to have 2 sunspots burnt off my face the other day and I had a nastier one CUT OUT of my head! Yes I have fair skin, but I've always been good with wearing sunscreen and staying out of the harsh sun. I shudder to think of what I might look like had I not been lathered in 15+ as a kid
Don't let lumps, bumps, marks, spots or anything go - get yourself to a doctor and have it checked out.