Pregnant?

Hi i had unprotected sex on the 8th of this month (the day after my period), I had taken a plan b after. Ive been nauseas and cramping since then and it is now the 25th. A week after I had taken the plan b i had bleed like a period for 3-4 days, which i read plan b can cause irregular bleeding so im hoping that was why? Now im having creamy/ white discharge, maybe cause of ovulating? Is all of this normal due to the plan b or does it sound more like pregnancy? Today would be day 17 since.