Treatment For Swollen Red Dot On Face

MY 9 YEAR OLD DAUGHTER HAS A BITE IN HER FACE THAT IS RED AND HAS A BLACK DOT IN LIDDLE OF IT, IT IS CAUSING PAIN AND MAKING IT HARD FOR HER TO CHEW FOOD. SHOULD I TAKE HER TO THE DR OR TREAT IT AT HOME. THIS STARTED 3 DAYS AGO AND HAS GOTTEN MORE SWOLLEN AS TIME HAS PASSED