Conceiving

Ok i have a weird question maybe someone can help..i have a friend asking me but i have no clue what to tell her..She said she had unprotected sex with random guy on the day her af this past 23 of aug..she says she ovulates on cd 14 or 15 which is like 2 weeks after she had sex..now shes worried she will come out pregnant..i told her i think that wont happen? What do you think? She looks up youtube and most say u can get pregnant during af thats why shes probably confused...