I had my period december 10-15 . and had unprotected sex on the 18th . now today when i wipe my vag area theres light blood ?

Pregnant?: Basically, you had sex on a fertile day, day #8 (8 days after start of your period). You could be pregnant, the bleeding isn't a sign necessarily of pregnancy, could be break through cycle bleeding. Best is to take a pregnancy test appx 5 days before period due. If negative, wait 5-7 days and repeat if period doesn't come. Good luck!