Sun cancer!

l am a woman of sixty, I have never got over loosing my partner of fifty from Mel. Cancer after a long battle                                                          I have had a mole for as long as I can remember but a couple  of days ago a tiny scab came off less than quater of a pin size mole gone only scab now tiny it cannot be nothing can it , cannot go through all that again.     Any help.      As I am on my own