Hi S.,
I have tons of them myself and get them sometimes on my face, have seen a dermatologist, but they say they are so small their is really nothing to worry about.
If it is the only one, just keep a close eye on it and it should shrink in size. DON'T MESS W/IT OR SCRATCH, PULL IT OR ANYTHING, that will irritate it and then no telling what it will do.
Just leave it be unless it starts oozing or getting larger. These strawberry marks are said to be "good luck", so leave then alone! I have lots of them all over, but they are about a dot size to tiny button size. They have never grown or cause me any trouble. They are like moles, just red/strawberry in color!
Good Luck!
Gladys