Plan B brown discharge HELP!

I took plan b 11 hours later after he pulled out June 21.

I got off BC June 10 and had a withdrawal bleed June 12-16.

Now I’ve had spotting this whole week and then today I noticed I have brown discharge it’s gettin heavier with clumps I see some blood also but not like a period. I think my period is coming.. What does this mean??? Don’t know when my period is coming next.

It’s been two weeks since the event and I’ve tested and it’s negative.