Implantation bleeding?

Hey y’all.

So on the 9th is when my fiancé and I had a accident and the condom broke.

I started bleeding three days ago. Heavy at first, but now it’s day three and I only see blood when I wipe. And that’s not normal. My periods stay pretty heavy and consistent.

I did take a plan b ( aftera cvs brand ) about 30 hours after the incident and it was the week of my ovulation.

Could this be implantation bleeding or just a weird period? When is a good time to test?