Hi, I Was Due To Get My Period On Saturday

Hi, I was due to get my period on Saturday and now it’s the Friday after and still no period, I did have unprotected sex a few days before I ovulated last month but no ejaculation inside, I’m having no symptoms of any form of pregnancy I was having bad cramps a few days ago but nothing now, normal discharge and my periods are normally quite regular so I am worried except I really don’t think I’m pregnant?