Help?!

Hey everybody! I am not on birth control,But two weeks ago I took a plan b pill due to obvious reasons , it was A day before my ovulation days started, (risky IK)🤦🏻‍♀️🥲 . The last day of my ovulation days (as it said on the app) I started spotting ,my first immediate thought was YUP I’m def pregnant, took a test it was negative. I was having it the benefit of the doubt and said maybe it’s too early to even test. The NEXT day the bleeding intensified and it lasted for a week.

like a period I guess .. my question here is should I test again or was that a sign the plan b worked.