Is it my period or bleeding from the pill?

Ashley
I know that if you take a plan B pill there might be some bleeding. But I took a plan B pill on the 10th, is it okay to start bleeding 6 days after taking it? I feel like that could be the reason why I'm bleeding now, or I might be having my period again for the second time this month. But that could also be due to stress, although I've been stressed for a month and a half and nothing's happened until now. Also, I find it weird because if this is my period, it's been 6 days since my last period.