bleeding

i ended my period december 24 i had sex on the 26 w/o a condom and used plan b. then i had sex december 30, and it was rough sex. but then i started bleeding later that night. its january 1, this is the third day and i’m still bleeding and it’s kind of heavy. i don’t have period symptoms, and i can’t tell my mom or go to a doctor. what should i do? is this normal?