Pregnant or period late from plan b?

How long did your guys period regulate after taking plan b? It’s been 3 months for me since I’ve taken it (while I was ovulating) and ik it doesn’t work while ovulating but it still makes me late a week and it makes me scared if I’m pregnant or not. I’m scared to take a test. And yes I have had unprotected sex.. But I’m getting all of the period symptoms and I keep feeling like I’m gonna get it but now it’s been 6 days late!! I’m freaking out.