I have a small pencil lead dot that appeared on the side of my foot by the pinkie toe. it just showed up. should i be worried?

Maybe: I assume this dot is the size of a pencil dot. This is not clear as to the color. It could be important. If this is new and in the skin I would see a dermatologist. Although it is unlikely this might be a melanoma. See the doc soon. Best wishes.

Use common Skinse.: You are at the age now when you can expect to see little dots starting to show up all over your body. It is not practical that every single one be examined. You need to keep a ledger and perhaps photos to document the history of their appearances. When there is a sudden change in size, color, shape or general appearance, that is the time to act.