I would go to a dermatologist. Does it itch
like it could be a spider bite?? If it is
something cancerous, say from over exposure
to the sun, it would appear to have grown
rapidly so why not pay the price of peace
of mind and get it checked out. The doctor
will not consider it stupid but playing it
safe and if it is something simple, it could
be removed at this stage probably rather
easily. If it is cancerous though, there
are natural alternatives for follow up
treatments, so let us know~~

best wishes,
Zoe

-_-