Hi i had a period on november 14-18 and on december 8 i had unprotected sex and now i'm 2 days late ?

Have you: done a pregnancy test? That's the first step, do one today. Good wishes.

What's your question: If you're late now, it's less likely that you're pregnant from 12/8/14 encounter, just a week ago. Instead, it's more likely that you got pregnant 23rd & 28th of last month, assuming 28d period. Check out http://www.babymed.com/conception-calculator to determine/estimate fertility/conception dates. Better yet, take pregnancy test now (very accurate once you're late). Go see family doc regardless