Extremely heavy bleeding after plan b??

extremely-heavy-bleeding-after-plan-b??

About one week ago I took a plan b for the first time. Now today I woke up with blood down there, which I assume is spotting ? Because I took the plan be on the last day of my period, so i don’t think my period would come only a week later? But the bleeding I experienced today has been the heaviest bleeding i’ve ever had! I typically do not completely fill up two whole large pads so quickly… So im worried! Is this normal?

Edit: i’m freaking out because i found out the pill doesn’t work good for overweight people and i’m a bit overweight so i’m so scared i’ll get pregnant😞