Scared what is this?

So I had unprotected sex the day I was ovulating Ik Ik stupid of me but I took a plan b the next day and it’s been 3 days since I took it and when I went to the bathroom I had this discharge is this normal after taking plan b and when I wiped it was pink and red idk if it’s my period or what but my next period is suppose to be in 10 days